Other studies show that soy has virtually no impact on mens risk for prostate caner [13]. Men in Indonesia and China with tofu in their diets were found to have lower memory functions and an increased risk of dementia (Horgervorst 2014). Antioxidant Action of Soy Isoflavones on Oxidative Stress and Antioxidant Enzyme Activities in Exercised Rats.. ; Although they contain phytoestrogens, soy foods do not increase the amount of estrogen in men or women. Indeed, a literature review performed in 2022 found that soy is generally safe for human consumption [9]. Wilson calls it an "urban legend," adding that if the two compounds were the same "there would be a lot of men in need of bras!". They believe soy isoflavone may reduce the level of testosterone thus lowering sexual function in men. For example, people following a vegetarian or vegan diet have a high risk of developing anemia mainly because most iron in a traditional diet comes from animal protein. The binding effect of isoflavone that mimics estrogen may help improve bone density, improve memory impairment, and reduce hot flashes in older women [7]. Soy and Health Update: Evaluation of the Clinical and Epidemiologic Literature.. Incorporating a diet with soy isoflavones may reduce the levels of bad cholesterol and lower blood pressure [6]. Soy does not turn men into women, cause infertility, prostate cancer, man-boobs, or affect reproductive hormones. 25 . Eating tofu or drinking shakes made with soy protein isolate will not cause your body to produce more estrogen (or testosterone). Soy isnt the worst food in the world, and its probably ok to have once in a while. Soy milk is probably not the best drink in the world if your goal is to raise testosterone levels. Estrogen is a female Hormone. Sherrill, Jessica D., et al. After careful analysis, his soya consumption was linked to erectile dysfunction and hyposexuality. Hypogonadism and erectile dysfunction associated with soy product consumption. That being said, its very difficult to overeat soy. Soy isoflavones are often thought to mimic the female reproductive hormone estrogen., and cancer risk. Testing has shown that eating soy protein and foods containing soy isoflavones does not increase estrogen levels or decrease testosterone levels in men. In this article, we detail what soy is, explain the effects of this protein-packed legume on testosterone, and finally break down the one ingredient that started this false rumor in the first place. No Difference Between the Effects of Supplementing With Soy Protein Versus Animal Protein on Gains in Muscle Mass and Strength in Response to Resistance Exercise. Soy, it turned out, contains estrogen-like compounds called isoflavones. Tofu might be bad for you, because it is refined food. Its true that soy is a complete protein source, and it has been used in the diets of many Asian cultures for the past 1,000 years. As part of your subscription and as medically indicated, physicians prescribe medications, and recommend supplements that are delivered to you from the comfort of your home. Speaking to reporters at the White House Thursday afternoon, Press Secretary Karine Jean-Pierre attempted to explain why WNBA player Brittney Griner was released from Russian . Today, my uncle gifted my sister, 11 year old, a brand new phone. The internet would have men thinking soy is the devil. Yes, Testosterone Injections Actually Build Muscle. Soy bean is almost complete protein, but it lacks a few essential amino acids (essential amino acids can't be made in the body and must come from food). Here, experts get down to the bottom of the controversy, explaining the pros and cons of soy and how it can fit into a balanced diet. A paste made from fermented soybeans, miso has (per tablespoon) 34 calories, 2g protein, and just 1g of fat. More answers below Biglee Murali Soy protein powder, as well as processed products like some meat substitutes and protein bars also include soy protein isolates, a dietary protein thats been isolated from soybeans. Nachvak SM;Moradi S;Anjom-Shoae J;Rahmani J;Nasiri M;Maleki V;Sadeghi O; Soy, Soy Isoflavones, and Protein Intake in Relation to Mortality from All Causes, Cancers, and Cardiovascular Diseases: A Systematic Review AND Dose-Response Meta-Analysis of Prospective Cohort Studies., Journal of the Academy of Nutrition and Dietetics. Zampelas, Antonis. Nagra stresses that just two case studies suggested that consuming excessive amounts of soyto the point where calories came almost entirely from soymay have impacted hormones and led to problems, such as erectile dysfunction. I'm a 15 year old male. So before you swear off soy, its worth digging into the details. However, studies conducted do not clarify if these results are only in those suffering from high blood pressure or if healthy adults experience the same benefits from increased isoflavone intake. We do not provide legal advice. Statements regarding Testosterone.org products are the opinions of the individuals making them and are not necessarily the same as those of Testosterone.org. The reason people say soy is bad for you is because it contains what are known as phytoestrogens. Another 18-month study found that soy protein was inferior to casein protein for raising IGF-1 levels in men [17]. Phytoestrogens are structurally similar to human estrogen and can weakly mimic or block estrogen activity in the body. This is where the soy boy meme comes from men who consume too much soy often produce too much estrogen, and take on a more feminine appearance. Soy may not be ideal for men looking to optimize their hormones and life, but its not the worst thing men can put in their bodies. Whey protein is another example of an iron-rich substitute but should be avoided if youre lactose intolerant. Soy consumption has been Short men can't reach high things, tend to be less strong, and in general don't project strength which is an attractive feature for men. Methionine deficiency in rats fed soy protein induces hypercholesterolemia and potentiates lipoprotein susceptibility to peroxidation. Including the recommended amount of soy is a great way to increase your plant protein, especially for people who follow a vegetarian diet, vegans, or anyone with underlying health concerns. Though soy was initially heralded as a promising superfood, the food has been plagued by rumors that it can feminize you and lead to issues like man boobs and erectile dysfunction. The subjects testosterone levels decreased 19% during their use of soy protein powder and induced estrogen activity. Isoflavones have just a tiny fraction of the strength of estrogen, says Nagra. Absolutely not! On one hand, it's rich in nutrients, and diets containing it appear to be linked to health benefits, such as lower blood sugar. Heres How. However, there are probably other foods that you should focus on if your goal is to raise your bodys natural testosterone production. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/31278047/. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/18555850/. All Right Reserved. To avoid soy and its detrimental effects start checking labels as an important step in maintaining male virility and health. >>Boost your testosterone with TestoPrime. https://www.ncbi.nlm.nih.gov/pubmed/17416779, https://www.ncbi.nlm.nih.gov/pubmed/20378106, http://www.lboro.ac.uk/service/publicity/news-releases/2008/104_tofu.html. But, he stresses, They do not function in the same way as estrogen as they are 100-1000 times weaker than our own estrogens.. Men continue to rely heavily on animal foods to meet their protein requirements, but being more plant-focused has definite advantages. Research indicates that including a diet rich in soy may reduce the risks of some men developing prostate cancer which is the second most common cancer occurring in men worldwide [19]. Cancer Prevention Research, 1-29, Moundras, C., Remesy, C., Levrat, M. A., & Demigne, C. (1995). 1 1.Soy for Men: The Good, the Bad, and the Ugly - Fitbit Blog; 2 2.Straight Talk About Soy | The Nutrition Source; 3 3.Is Soy Bad for Men: The Truth About Soy Products and Testosterone; 4 4.Neither soy nor isoflavone intake affects male reproductive hormones; 5 5.What Men Should Know About Soy - Herbalife Nutrition For more information about the relationship between Hone and the medical practices click here. Low testosterone can be linked to diminished sex drive, erectile dysfunction, reduced muscle mass, depression, fatigue, and osteoporosis. Several recent literature reviews found that soy did not have a significant impact on mens reproductive hormones. Estrogen, erroneously connotated as a female-exclusive hormone, plays an important role is the male bodys hormone equilibrium (Thrane, Paulsen, Orcutt and Krieger 2016). Another meta-analysis found that soy milk had a protective effect against prostate cancer [15]. There are several types of soybean products described as either fermented and unfermented. Why soy is bad for males? Soy and soy isoflavones in prostate cancer: a systematic review and metaanalysis of randomized controlled trials. A half-cup has 160 calories, 15 g protein, and 9g of fat. No. You should also watch out for added ingredients in some soy foods, including added sugar, excess salt, and other chemicals included in highly processed foods. Cancer Prevention Research, canprevres-0465. It is really a mixture of different foods soy sauce is made from a fermented paste of soybeans, roasted grain, brine, and aspergillus oryzae or aspergillus sojae molds [20]. Research clearly suggests that soy is a healthy foodand concerns can be put to rest. As for the one study that found two men having feminizing of the chest? However, most modern-day soy products are heavily processed, and contain large amounts of phyto-estrogens which have been shown to increase estrogenic effects in men. Soy is a protein that is found in soybeans, a type of legume that is native to East Asia. Is it a good food for men who are trying to optimize their testosterone levels? Sucralose side effects: All You Need To Know. Lets take a quick review of the research. (1996). It may fight diabetes. If you want to avoid GMO-based soy lecithin, you can opt for food products using the organic version of the ingredient. Start by replacing meat with tofu or regular milk with soy milk a couple times per week. There are also several studies showing that soy decreases your overall all-cause mortality risk, and may even reduce your risk for cardiovascular disease and certain cancers. Soybeans also include omega 6, omega 3, and polyunsaturated fats, which help lower cholesterol, all necessary for a healthy heart [12]. Promescent Has a Cytotoxic Impact on Fresh Human Sperm In Vitro. & Dipaola, R. S. (2007). There are numerous scientific studies proving that neither soy foods nor soy protein affect hormones in men in any way. Isoflavones are antioxidant compounds that may prevent some types of cell damage, The binding effect of isoflavone that mimics estrogen may help improve bone density, improve memory impairment, and reduce hot flashes in older women, Can soy reduce the occurrence of hot flashes in menopausal women. The isoflavone in soy may reduce inflammation of blood vessels which is beneficial to cardiovascular health [13]. Isoflavones have been linked to a lower risk of colon/colorectal cancer, digestive tract cancer and may protect against cancer of the large intestine, stomach, and lungs [18]. Soy lecithin is a generally safe food additive. Neither soy nor isoflavone intake affects male reproductive hormones: An expanded and updated meta-analysis of clinical studies. No. It would be best if you watched out for highly processed foods containing soy, such as soy protein bars, soy powders, and soy meat substitutes. Today over half of the worlds soy is grown in the United States. Rumors persist that soy can negatively impact mens health. May Cause Toxic Buildup. An earlier 2021 meta-analyses of 38 clinical studies, published in Reproductive Toxicology (4), found that soy and its isoflavones also did not alter levels of total testosterone, free testosterone, or estrogens in meneven when eaten long-term at levels that exceed the amounts typically consumed in Asian cultures. However, elevated levels of estrogen stunts muscle development, lowers testosterone, increases cortisol levels, causes gynecomastia, decreases libido, and even reduces sperm production. A study performed in 2007 found that one serving of soy protein powder lowered mens testosterone levels by 19% [16]! Soy foods also provide a lean source of protein. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/19524224/. There is also little evidence to suggest that soy negatively impacts mens reproductive systems. 2017, www.ncbi.nlm.nih.gov/pmc/articles/PMC5409663/. Soy can interfere with certain medicationsAllergy. The only studies that show a negative outcome were done on people and animals who were consuming almost all of their calories from soy. Health Benefits of Phyllanthus Niruri- Gale of the Wind. One caveat: some soy products contain estrogen-like chemicals that could have adverse effects. Americans have taken this out of control as if a lot of soy is better. Home Health What Most Men Get Wrong About Soy. The main danger from soy to the thyroid is the goitrogens it contains. It also contains less saturated fats than meats like beef and pork, which are essential to look out for while managing your cholesterol. The Edge is Hone Healths editorial operation. , an essential component of sports nutrition, and a necessity for vegetarians everywhere. My parents feel bad for my parents feel sad because I haven't received anything and they want to buy me a computer. It can also cause some men to have emotional mood swings reminiscent of a hormonal woman, although this effect has little scientific evidence to back it up. The truth is somewhere in between. It was found in a 2014 study (Horgervorst 2014) that as a result, these Asian men are 10% more likely to experience erectile dysfunction. The authors point out that their research affirmed the conclusion of a 2010 meta-analysis (5) and that its unlikely that additional research will alter this conclusion.. , MDPI, 4 Nov. 2019, www.ncbi.nlm.nih.gov/pmc/articles/PMC6893524/. Soy milk side effects in males have a lot. Because it's a relatively inexpensive form of protein, soy is used in many processed foods. The reduction of antinutrients during the fermentation process makes fermented soy a better option offering more of the health benefits mentioned earlier. Theres no indication that tossing tofu on your stir-fry or sharing a bowl of edamame will negatively affect your hormones. Sometimes the voice and actions can become feminine as well for some individuals. Soy is one of the only plant foods that contains all 11 essential amino acids. The only studies that show a negative outcome were done on people and animals who were consuming almost all of their calories from soy. Fermented soy is arguably the healthier form of soy. (2015). Metabolism, 44(9), 1146-1152, Neacsu, M., Fyfe, C., Horgan, G., & Johnstone, A. M. (2014). The effects of soy and whey protein supplementation on acute hormonal responses to resistance exercise in men. Farmers first started growing soy in the 11th century. Men in Asian countries, especially Japanese men, consume the most soybeans globally, and some eat anywhere between 60-120 grams of soy per day without any adverse side effects [3]. Saturated Fat Consumption and Risk of Coronary Heart Disease and Ischemic Stroke: A Science Update.. The Food and Drug Administration recommends eating 25 grams of soy a day for a balanced diet, equal to 2-4 servings per day [2]. Soybeans are not bad for men, but because of the estrogen-like ingredient isoflavones and the negative effect that high estrogen has on men, some jumped to the conclusion that soybean products are harmful, which is simply not true. Not all protein sources are equal and some forms of protein are better than others. However, using a soy protein powder once in a while probably wont destroy your progress in the gym, and it may have some heart-healthy benefits as well. Soy protein powder probably isnt your best bet. In fact, adding soy protein to a healthy diet reacts positively with the microorganisms working within the digestive tract and stomach to create a healthier environment that contributes to a healthy gut [21]. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/29300347/. Most studies show that soy milk is no better or worse for men than any other soy product. Soy, or soya bean, is a type of leguminous plant that primary grows in eastern parts of Asia. Isoflavones are antioxidant compounds that may prevent some types of cell damage [5]. JE;, Martinez J;Lewi. The Effects of Soy and Its Components on Risk Factors and End Points of Cardiovascular Diseases.. Toss in some fears that environmental estrogens contributed to mens declining sperm count and soy was officially protein non grata. Huang, Y., Pan, L., Xia, X., Feng, Y., Jiang, C., & Cui, Y. Environmental Issues in Maintaining Reproductive Health. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/23161396/. Just one tablespoon of soy sauce contains 2.3 grams of sodium! During processing, microorganisms are added to break down the nutrients in the soy, increasing the protein levels and making it easier to digest. Our content is continually monitored by an internal peer-review process to ensure accuracy. This is something found in both soy food products as well as soy supplements. An Unusual Case of Gynecomastia Associated with Soy Product Consumption., Endocrine Practice : Official Journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists. Is soy bad for women's hormones? 2. People have many different opinions about soy. Soybeans have about 10g of fiber per cup, which can help lower cholesterol in other foods [14]. Overall, the research is pretty clear that soy is an ok food to eat, and it will not increase your risk for heart disease, cancer or other diseases. Studies suggest soy's beneficial role in menopause. Soybeans contain a high concentration of a compound called isoflavones, a type of plant estrogen also known as phytoestrogen. Different types of soy products and their possible benefit and risk associated with dementia in China and Indonesia. Why is soy bad? Many soy products are genetically modified organisms (GMOs)Can effects digestion. A study in 2007 provided male test subjects over the age of 18 two scoops (56g) of soy protein powder a day for 28 days. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/27798832/. Too much of anything, even if its healthy, could have adverse side effects and lead to health problems. 13 Sneaky Signs Your Testosterone Is Too Low, Neither soyfoods nor isoflavones warrant classification as endocrine disruptors: a technical review of the observational and clinical data. This was just a correlational study, meaning that people who eat soy may live longer because they are doing other things that are good for their health, such as eating a healthy diet or exercising several times per week. Overall, soy is probably an ok food for men. You must consult your own medical professional. Soy Consumption and the Risk of Prostate Cancer: An Updated Systematic Review and Meta-Analysis. For example, tofu, soy sauce and soy lattes are known to raise estrogen levels in men. First of all, rats and mice are not humans and therefore process food differently. Kimberly Langdon 318 5th St, West Des Moines, IA,5026. Dwyer, J. T., Goldin, B. R., Saul, N., Gualtieri, L., Barakat, S., & Adlercreutz, H. (1994). Today many public figures are talking about the potential benefits of adopting a plant-based diet, both for human health and for the environment. Consume up to four servings a day of soy. It increases bone density and muscle mass but it also has positive effects on the heart and brain as well as enhancing the libido. Important Disclaimer: The information contained on Healthy Focus is intended for informational and educational purposes only. What happens when you eat too much soy? These metabolic processes also help with cognitive and physical development. Healthy Focus is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to healthyfocus.org. Soy isoflavone may reduce LDL, the bad cholesterol by 3% 6%, which doesnt sound like much, but every little bit helps when it comes to improving your lifestyle [14]. Soy is not toxic to cats, but it should not be . What's more, soy may reduce the risk of prostate cancer in men. Research shows (1) that its safe to consume no more than 100 mg of isoflavones per day. Ahn-Jarvis, J., Clinton, S. K., Grainger, E. M., Riedl, K., Schwartz, S. J., Lee, M. L. T., & Vodovotz, Y. Men in Asian countries, especially Japanese men, consume the most soybeans globally, and some eat anywhere between 60-120 grams of soy per day without any adverse side effects. It may be better to consume whole sources of soy like edamame, rather than soy ultra-processed foods since these can be high in sodium. Some supplement companies have started selling soy protein powders, such as soy protein isolate, to their customers. Biochemical Journal, 296(1), 151-154. It would be very difficult for humans to consume the same amount of soy in relation to what scientists provided for the animals in these experiments. Absolutely not! Phytoestrogens bind to some of the same receptors in the body that our own estrogen does, says Vancouver-based Matthew Nagra, ND, who specializes in plant-based and vegan nutrition. Why soy is bad for males? In one case study (2), a 19-year-old developed ED and saw his testosterone levels and libido drop after consuming the equivalent of 360 mg of isoflavones per day in the form of soy milk, soy crisps, tofu, soy sauce, soy nuts, and soybeans. These tend to have more unnecessary ingredients like sugar and salt, and if consumed in large amounts can lead to negative health effects like cardiovascular disease. But there are other ways that men can increase testosterone naturally without worrying about increasing estrogen. Numerous studies show that people who consume soy products have a lower all-cause mortality risk, and are less likely to have heart disease, type 2 diabetes or even cancer. This includes thyroid irregularity, bladder cancer, prostate cancer and dementia, particularly those over 65. His testosterone levels also dropped drastically. Though evidence supporting soy lecithin as a supplement is somewhat limited, the evidence backing choline could steer people toward this food additive in supplement form. In those reports, animals and people who were fed stupid amounts of soy developed issues like gynecomastia (man boobs) and erectile dysfunction (1). We strive to never have a piece of inaccurate information on this website. Muscle mass Soy foods are a great source of plant protein. 5. Heres what the science says. Disclaimer: Testosterone.org does not offer medical diagnosis or treatment advice. Is soy lecithin bad for males? Soy Isoflavones and Cancer Prevention.. Soy isnt the worst food in the world for men. Beyond the Cholesterol-Lowering Effect of Soy Protein: A Review of the Effects of Dietary Soy and Its Constituents on Risk Factors for Cardiovascular Disease.. Soy sauce has been called mans oldest prepared seasoning [19]. Soybeans also include omega 6, omega 3, and polyunsaturated fats, which help lower cholesterol, all necessary for a healthy heart, The isoflavone in soy may reduce inflammation of blood vessels which is beneficial to cardiovascular health, Soy isoflavone may reduce LDL, the bad cholesterol by 3% 6%, which doesnt sound like much, but every little bit helps when it comes to improving your lifestyle, Soybeans have about 10g of fiber per cup, which can help lower cholesterol in other foods, Soybeans are packed with iron about 9 mg per cup, so much so that. The American Cancer Society's dietary guidelines note that consumption of soy foods is not only safe but "may even lower breast cancer risk." Another study in the journal Nutrition & Metabolism has also shown that increased soy consumption correlates to a reduced risk of prostate cancer for men. Researchers believe that soy induces changes in the fatty acids in your bloodstream, and these changes reduce your risk for cardiovascular disease. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/18558591. There are those who think soy is one of the best protein sources you can use, and others who say that it is terrible for your health especially your testosterone levels. The prevalence of soy as an ingredient in everyday foods will lead to excessive consumption. I'm 6'5", 240lbs. Soy has also been found to decrease your risk for gastrointestinal disease, and even cancer [8]. Wagner JD;Zhang L;Shadoan MK;Kavanagh K;Chen H;Tresnasari K;Kaplan JR;Adams MR; Effects of Soy Protein and Isoflavones on Insulin Resistance and Adiponectin in Male Monkeys.. . Meanwhile, another study from 2011 examined the effects of soya on one 19-year-old man who consumed large quantities of soya as part of a vegan diet. Many have wondered if soy milk is bad for men, but research shows that most people assigned male at birth, as well as babies and children, are safe to eat soy. Tofu is made from soy bean. However, the subjects involved consumed an extraordinarily high and unrealistic amount of soy on a nutrient-deficient dietabout nine times the amount consumed by most older men [1]. Likewise, we do not provide medical advice, diagnosis, or treatment. Iodine is crucial to the body as it helps it to produce a hormone that helps with the metabolic processes in the body. Tossing a hunk of . It's in the blood. Research shows that up to 100 mg of isoflavones (the equivalent to about four servings of whole soy foods per day) is safe (1). If your goal is to maximize your testosterone levels and your physical performance, then there are probably better foods that you can eat. The myth that men develop breasts from soy sprang from thinking phytoestrogen and human estrogen are synonymous. Will Soy Increase Estrogen Levels in Men? For those who take fitness seriously, using soy proteins could hinder or reverse progress made at the gym. Hone is an online clinic that helps people optimize their hormones. Again, dosing is an important factor here. However, most modern-day soy products are heavily processed, and contain large amounts of phyto-estrogens which have been shown to increase estrogenic effects in men. There is, in fact, no robust evidence that soy causes elevated estrogen levels in males or indeed, has any significant effect on hormone levels. Goodin, S., Shen, F., Shih, W. J., Dave, N., Kane, M. P., Medina, P., Lambert, G.H., Aisner, J. For example, a recent meta-analysis found that incorporating soy milk into your diet may reduce your risk for cardiovascular disease [14]. However, elevated levels of estrogen stunts muscle development, lowers testosterone, increases cortisol levels, causes gynecomastia, decreases libido, and even reduces sperm production. This compound can bind to estrogen receptors and mimic estrogen properties found in the human body. However, soy has a bad reputation among men as many think soy foods can drastically reduce testosterone levels, make their appearance feminine, lead to poor libido, and hinder muscle growth. But there are other ways that men can, Soy was initially shown to negatively affect male rats and mice, including lowering testosterone, decreasing sperm count, and affecting litter size, First of all, rats and mice are not humans and therefore process food differently. Soy and Estrogen: How Does It Affect Men? Any statements made on this website have not been evaluated by the FDA and any information or products discussed are not intended to diagnose, cure, treat or prevent any disease or illness. That's because the extraction process for soy lecithin uses hexane. Heres a breakdown of common soy food products to give you an idea of their nutritional value: There are several types of soybean products described as either fermented and unfermented. Others think that soy is a heart-healthy food that deserves a place in your overall diet. Answer (1 of 5): Soy for any gender is bad news. Appetite control and biomarkers of satiety with vegetarian (soy) and meat-based high-protein diets for weight loss in obese men: a randomized crossover trial. This is especially true as soy has a reputation for lowering testosterone levels and raising estrogen levels in men. But even then, you may still be exposed to certain toxic chemicals. However, research is not considered conclusive. No. But like other studies found on soys effects and benefits, more testing must be done to confirm these results. Huang H;Krishnan HB;Pham Q;Yu LL;Wang TT; Soy and GUT Microbiota: Interaction and Implication for Human Health., Journal of Agricultural and Food Chemistry. It has been demonstrated in studies conducted by our team and others that soy products are excellent sources of bodybuilding protein, coat-nourishing vegetable oil, and fiber for cats. However, the impact of isoflavone is much weaker and does not affect estrogen levels [4]. It would be very difficult for humans to consume the same amount of soy in relation to what scientists provided for the animals in these experiments. The soy myth has been around since the 1950s when animal studies on soy first began but has subsequently been debunked multiple times since. Soy is high in estrogen. Soys bad publicity stemmed from two case studies that suggested excessive amounts of the protein from soybeans appeared to impact hormones. Soy was initially shown to negatively affect male rats and mice, including lowering testosterone, decreasing sperm count, and affecting litter size [9]. Tofu and soy drinks contain phytoestrogens. The bottom line is soy is probably ok for men. Summary. Dietary L-ARGININE Intake and the Incidence of Coronary Heart DISEASE: Tehran Lipid and Glucose Study.. The truth is soy has very little impact on mens sexual health, or their testosterone production. Patients suffering from any of these conditions should consult their physician prior to using prescription medication. Long-Term Effects of Phytoestrogen Daidzein on Penile Cavernosal Structures in Adult Rats. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/15998749/. Research shows (9) that soy protein increases muscle mass and strength just as well as whey protein, which has long been considered the top-quality protein in the bodybuilding space, says Dr. Nagra. Isoflavone Supplements for MENOPAUSAL Women: A Systematic Review.. Foods like tofu, tempeh, edamame, miso soup, and soy milk are made from soy, a protein isolated from soybeans. That's true regardless of gender. Similar to whey protein, soy may increase energy and improve recovery time during resistance exercise training and other athletic workouts. While there are worries that soy may affect testosterone, research has found that soy consumption did not decrease reproductive hormone levels (4). Why soy is bad for males? Testosterone.org 2022. People who consumed more isoflavones, found in tofu and soy milk, had an 11 percent lower risk of type 2 diabetes than those who didn't eat much, according to a 2017 . Soybeans are a part of the legume family. There are foods that kill testosterone and likewise, foods that increase testosterone, but soybeans and soy food products are not one of them. In 2014, a study done by Neacsu, Fyfe, Horgan and Johnstone found that excessive soy consumption led to infertility and erectile dysfunction. Hogervorst, E. (2014). An unusual case of gynecomastia associated with soy product consumption. However, the subjects involved consumed an extraordinarily high and unrealistic amount of soy on a nutrient-deficient dietabout nine times the amount consumed by most older men, The Food and Drug Administration recommends eating, for a balanced diet, equal to 2-4 servings per day, . A half-cup of raw tofu has 94 calories,10g protein, 6g of fat, and 434 mg of calcium. Not only is eating soy safe for your hormones, soy is good for your hear, builds muscle, and decreases your prostate cancer risk. This is a component that prevents the thyroid from being able to absorb iodine. Thats at least 10 times more than people eat on average, even in cultures that consume a lot of soy. Nutritional profile and health benefits Effects on thyroid function. One of the best ways you can eat high-protein soy is as a replacement for animal proteins that can be higher in saturated fat (such as red meat)thats one reason why soy is considered a heart-healthy food. Potential Downfalls of Soy and Soy Products, Soy, in general, is a healthy food product when consumed in its most natural form, but when soy is over-processed into food such as soy protein bars, soy-infused veggie sausages, and soy burgers, thats when these products are more questionable and can lead to digestive issues such as nausea, constipation, and bloating. The soy intake by using isoflavone supplements would be abnormally high for anyone. Soy, the man killer Gyno from too much soy protein Male breasts from hormone imbalance Along with the isoflavones, soy is rich in amino acids like Arginine, which helps to regulate blood flow, blood pressure levels, and may help manage heart disease [16]. , MDPI, 5 Jan. 2018, www.ncbi.nlm.nih.gov/pmc/articles/PMC5793271/. In humans, soy consumption may contribute to leaky gut syndrome, which can cause inflammation and problems with digestion like excess gas and bloating. Journal of the American Dietetic Association, 94(7), 739-743, Elbardisi, H., Majzoub, A., Al Said, S., Al Rumaihi, K., El Ansari, W., Alattar, A., & Arafa, M. (2018). , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/19145965/. As a protein source, soy has a slower protein synthesis than whey, casein and pea proteins and contain anti-nutrients like lectin and protein inhibitors that block the digestion and absorption of nutrients. We focus on finding the most accurate information from the scientific source. Soy is eaten in very small quantities before a meal by the Japanese to aid in digestion. Testing has shown that eating soy protein and foods containing soy isoflavones does not increase estrogen levels or decrease testosterone levels in men. For example, in Japan, older adults consume 30 to 50 mg per day of isoflavones, while in the U.S., its only a few milligrams per day, shows research (1). Now that we know soy is not a bad guy in this story and, if taken as recommended, has no adverse effects on mens health, lets take a look at some of the basic soy facts and how this little legume can transform your diet. The key word here is weakly. I don't know. Advertisement Soy milk is a very popular non-dairy milk replacement, . A literature review from 2019 found that people who eat more soy tend to have a decreased all-cause mortality risk [3]. Testosterone.org makes every effort to ensure that any information it shares complies with national and international standards for clinical trial information and is committed to the timely disclosure of the design and results of all interventional clinical studies for innovative treatments publicly available or that may be made available. Stick with 1 to 2 servings of whole soy foods (1 serving = 1 cup soy milk, cup cooked soy beans, cup edamame, 1 ounce soy nuts or 2 ounce tofu). Several recent studies show that soy is a heart-healthy food, and decreases your risk for cardiovascular disease [4, 5, 6]. There are many health benefits of soybeans and soy protein when included in a balanced diet. Why soy is bad for males? As men grow older, their levels of testosterone drop but estrogen levels increase. However, it wasnt introduced to Europe and North and South America until the 1700s. Inhibition of glutathione synthesis increases the toxicity of oxidized low-density lipoprotein to human monocytes and macrophages. Because men's bodies produce estrogens too but in much lower amounts. Add a header to begin generating the table of contents. , BioMed Central, 15 Mar. Large meta-analyses (4) found that soy did not affect sperm or semen in men. Food manufacturers use this as a protein filler to top up protein counts in food products. Avoid soy supplements. Soybean isoflavone exposure does not have feminizing effects on men: a critical examination of the clinical evidence. ; Unless consumed in excess quantities, soy proteins are . After you eat soy, the isoflavones are metabolized and then may weakly have effects like estrogen in your body, according to the Centers for Disease Control and Prevention. Administrators gave these men 18-36 servings of soy each day and in supplement form, not food. No. If you have concerns about your hormone levels and want to know which foods to avoid that could lower testosterone, we have information on, or you can check out what we found out about, No. Arab Journal of Urology,16(1), 3-9, Hajos, G., Gelencsr, E., Grant, G., Bardocz, S., Sakhri, M., Duguid, T. J., Newman, A.M.,Pusztai, A. Soy has been used in Asia for about 1,000 years. Only 10%-15% of fat from soy is saturated fat, lowering your risk of heart disease. Soy is generally a good source of protein . Prostate cancer is the most common cancer in men in the U.S., except for skin cancers, according to the American Cancer Society. Isoflavone is a phytoestrogen compound found in soybeans with estrogen-like effects, but these effects are much weaker than estrogen found naturally in the body. Manufacturers are routinely hiding soy in foods such as bread, meat products with filler (hamburgers) protein bars (Cliff bars), infant formula and other common foods. Soy is arguably one of the most controversial nutrition topics. , Oxford University Press, 1 Sept. 2010, academic.oup.com/biolreprod/article/83/3/488/2530146. Soy products, such as milk, yogurt, and tofu, have a nutritious advantage over dairy and other animal products. Because it's present in such small amounts in food, it's unlikely to be harmful. Made with testosterone. It's no different than V's and curves. Soy can also help you build muscle. Indeed, one recent study found that people who eat soy had lower total cholesterol, LDL cholesterol, and triglycerides [7]. Why soy milk is bad for males? (2015). Vitale DC;Piazza C;Melilli B;Drago F;Salomone S; Isoflavones: Estrogenic Activity, Biological Effect and Bioavailability., European Journal of Drug Metabolism and Pharmacokinetics. But before you toss out your tofu, lets take a deeper look into these studies. Soy is one of the most controversial foods in the world. , German Medical Science GMS Publishing House, 15 Dec. 2014, www.ncbi.nlm.nih.gov/pmc/articles/PMC4270274/. Though evidence supporting soy lecithin as a supplement is . If so, youre in the perfect place. However, there is a lot of real-world evidence that men who consume more soy products have higher estrogen levels than men who dont. . But these beliefs are not supported by the latest scientific evidence. This compound can bind to estrogen receptors and mimic estrogen properties found in the human body. Taku K;Umegaki K;Sato Y;Taki Y;Endoh K;Watanabe S; Soy Isoflavones Lower Serum Total and LDL Cholesterol in Humans: A Meta-Analysis of 11 Randomized Controlled Trials., The American Journal of Clinical Nutrition. Cumulative Meta-Analysis of the Soy Effect Over Time. We may receive commissions on purchases made through links on our site. Gotoh, N., Graham, A., Nikl, E., & Darley-Usmar, V. M. (1993). Soy does not have a hidden dark side and is not a dangerous food for men. In fact, most studies show that soy consumed in moderation has beneficial effects on mens health as well as women and children, proving theres no reason for most people to avoid soy. . This information, including any referenced scientific or clinical research, is made available for educational purposes only. Some people believe that soy isoflavones may raise the risk of breast or endometrial cancer. However, many of the modern day foods that use soy are probably not as good for your overall health. However, there are also studies showing how soy directly improves human health even if it is just a little bit. In general, soybeans are a high protein, low carb food, beneficial for those suffering from hypertension [15]. world of medical research. I Lost 120 Poundsand 20 Percent Body FatWith TRT, This Link Between Thryoid Issues and Low T May Blow Your Mind, Before TRT, I Watched My 10 Rep Squat Minimum Tank to 2. Short women are perceived as more petite and feminine, which is an attractive trait for women. Fortunately, the effects of plant estrogens on mens health are very positive. Urology,114, 95-98, Thrane, M., Paulsen, P. V., Orcutt, M. W., & Krieger, T. M. (2016). Myths about soybeans and soy consumption have been around for decades, but study after study proves that these rumors are absolutely not true. Soy sauce appears to lower systemic inflammation and reduce your risk for developing certain types of cancers, such as liver cancer [21]. However, it should probably be avoided for men looking to optimize their testosterone levels. There are also several studies showing that soy decreases your overall all-cause mortality risk, and may even reduce your risk for cardiovascular disease and certain cancers. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/17413118/. But there was one study conducted on humans that resulted in hormonal disturbances. Consuming soy protein provides that added boost of iron needed. If you want to know more about how soy consumption affects mens health issues, including low testosterone, sexual function, and prostate cancer, dont hesitate to seek professional medical advice from your local doctor or other health professionals. A later study tested the effects of soy on 20 men for 83 days, and two of those men reported female-like changes in their bodies once the experiment concluded [10]. Problems arise when soy (or other foods) becomes the dominant food in your diet. And if you believe the hype that all refined food is bad, then tofu is also bad. Soy foods can play an important role in the diets of men by providing high-quality protein and healthy fat. Male hormones Low libido and muscle mass, mood changes, reduced energy levels, and poor bone health are all associated with low testosterone levels. , but because of the estrogen-like ingredient isoflavones and the negative effect that high estrogen has on men, some jumped to the conclusion that soybean products are harmful, which is simply not true. What Are Normal Testosterone Levels By Age? Furthermore, the rats and mice involved in these studies consumed a diet. Please consult a healthcare practitioner before making changes to your diet or taking supplements that may interfere with medications. , U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/14628433/. , The Korean Nutrition Society and the Korean Society of Community Nutrition, Dec. 2014, www.ncbi.nlm.nih.gov/pmc/articles/PMC4252520/. Your access to Testosterone.org is subject to our full disclaimer and terms of use. The American journal of clinical nutrition,100(2), 548-558, Sutton, M., Hunn, C., Summers-Colquitt, R. B., Chen, S. H., Kavoussi, S. K., Kavoussi, K. M., & Kavoussi, P. K. (2018). Soy: A Complete Source of Protein.. Very little research has been performed on soy sauce. Soy does not negatively affect testosterone in men. Ramdath, D Dan, et al. As we detail exactly what men need to know about soy consumption inside this guide. One cup has 131 calories, 8g protein, 4.3g fat, and 10g of sugar. People enjoy tofu, which is commonly known as 'soy paneer' in India. Fermented soy protein has 83% per cup, making this a great meal plan addition for athletes, weight lifters, resistance training, and anyone wanting to increase muscle mass. Still, some men worry that consuming phytoestrogens may reduce their testosterone levels. Clinical studies show no effects of soy protein or isoflavones on reproductive hormones in men: results of a meta-analysis, Association between consumption of soy and risk of cardiovascular disease: A meta-analysis of observational studies. blurred vision. InBioenvironmental Issues Affecting Mens Reproductive and Sexual Health, 175-189, Lesinski, G. B., Reville, P. K., Mace, T. A., Young, G. S., Ahn-Jarvis, J., Thomas-Ahner, J., & Schwartz, S. J. High soy consumption does not affect the sperm count or have any effects on testosterone levels. Extremely weakly. Numerous studies have shown that soy is an inferior source of protein and can have negative effects on men. Soy was initially shown to negatively affect male rats and mice, including lowering testosterone, decreasing sperm count, and affecting litter size [9]. However, it can be an OK option for men who are trying to avoid animal protein sources altogether. Several studies have linked soy consumption in animals to digestive issues that occur as a result of reductions in the gut's barrier function. However, animal meat plays a critical role in all human civilizations, and making the jump to a soy-based diet many not be optimal for human health. Experiment with different soy foods and their preparations to see what you like. At that point, theres potential that youll miss out on other nutrients that you need in your diet, says Nagra. Soy is not bad for the gut health of humans. But that didnt stop some from jumping to the conclusion that if soy intake has a negative impact on lab rats, they surely have similar effects on humans. Soy is marketed as a protein source for men and women alike. Soy has been marketed as asuperfood but there is controversy over this product. Urology,72(1), 220-224. doi:10.1016/j.urology.2007.11.06, Kraemer, W. J., Solomon-Hill, G., Volk, B. M., Kupchak, B. R., Looney, D. P., Dunn-Lewis, C., & Maresh, C. M. (2013). A little bit of soy sauce here or there is probably fine. Some studies indicate excessive amounts of soy can cause men to become more feminine, while others indicate it may decrease the risk of prostate cancer. But what does the research say about it? Soy is also a protein powerhouse, an essential component of sports nutrition, and a necessity for vegetarians everywhere. Rumors persist that soy can negatively impact men's health. Soy has played a role as a dietary staple in Asia and dates back many centuries. Jargin, Sergei V. Soy and Phytoestrogens: Possible Side Effects.. Soy consumption in males can lower men's natural estrogen levels. Farr Institutedoes not provide medical advice, diagnosis, or treatment. Isoflavone pharmacokinetics and metabolism after consumption of a standardized soy and soy-almond bread in men with asymptomatic prostate cancer. Soy lecithin is a generally safe food additive. Soy milk is made by grinding down soybeans, boiling them, and then filtering out the leftover particulates. Eating too much soy on a daily basis can cause a man to become more feminine, such as gynecomastia, aka male breast growth or man boobs. In a review of 30 studies, high soy consumption was linked to a significantly lower risk of developing the disease ( 25 ). During processing, microorganisms are added to break down the nutrients in the soy, increasing the protein levels and making it easier to digest. Disclaimer: The contents of Testosterone.org are for informational and educational purposes. 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