What Are The Dangers Of Drinking Soy Milk?

10 Major Disadvantages of Soy Milk You Should Know - Flab Fix

By Lindsay Boyers Up to date August 7, 2019

Reviewed by Sylvie Tremblay, MSc


Sylvie Tremblay, MSc

Sylvie Tremblay holds a Grasp of Science in molecular and cellular biology, and has years of expertise as a most cancers researcher and geneticist.

Picture Credit: jeehyun/iStock/GettyImages

Many people swap cow’s milk for soy milk. In case you’re making the change and you observe a balanced diet and haven’t any particular issues with soy products, you are not prone to face any hazard.

Certain compounds in soy have potential benefits, however once you consume an excessive amount of processed soy, which is the muse of business soy milk, issues can arise.


However, for those who’re consuming fermented forms of soy, like miso, tempeh and natto, as an alternative of drinking soy milk, advantages may turn out to be noticeable. The key is to ensure you’re being picky along with your soy consumption and consuming the protein only moderately.


Processed soy milk can disrupt the way in which estrogen works in your body and may result in hormonal imbalances if consumed in excess. Soy milk might also make it more durable on your physique to digest and take up important minerals. However, fermented soy merchandise are more simply digested and absorbed and may help hold your intestine wholesome.

Soy Milk Risks

One of the most notable risks of soy milk involves its isoflavones, which have a chemical construction just like the hormone estrogen. As a result of they can bind to estrogen-receptors in the physique, isoflavones are categorized as phytoestrogens. But here’s where it will get slightly tricky.


There are two estrogen receptors in the body. When isoflavones connect to 1, they produce estrogen-like effects, however after they attach to the other, they’ve an anti-estrogen effect. Because of this, isoflavones in soy milk have been linked to breast most cancers in some circumstances, but not in others.

A examine published within the Journal of the Nationwide Cancer Institute in September 2014 noted that estrogen-like activity is beneficial in postmenopausal ladies, however not in women who have an lively menstrual cycle. Because of this, and based mostly on previous studies on soy, researchers concluded that soy milk consumption may be problematic for younger ladies, but can actually be helpful for ladies about 10 years after menopause.


The phytoestrogens can also have destructive effects on thyroid function , particularly in those with thyroid disease or subclinical thyroid illness or those who are poor in iodine.

Phytates in Soy Milk

Phytoestrogens aren’t the only downside , though. Soy also comprises phytates, that are anti-vitamins that may block the absorption of sure minerals, like iodine, zinc, iron, magnesium, copper and chromium. In case you’re consuming quite a lot of soy milk and consuming processed meals that contain soy, this may increase your risk of growing dietary deficiencies.


Phytates and phytoestrogens also intervene with metabolism and can result in elevated fat accumulation, weight achieve and obesity, according to a February 2012 report revealed in Food and Vitamin Sciences Although concerns with soy isoflavones are an enormous part of soy milk risks, there are also issues with the way in which many soy crops are grown, especially in the United States.

Concerns About Genetic Modification

Soy is without doubt one of the leading genetically modified, or GM, crops (also known as genetically modified organisms or GMOs) in the United States. In truth, the United States Division of Agriculture (USDA) notes that ninety four p.c of the soy presently grown within the U.S. is genetically modified. In easy terms, genetic modification is when meals scientists and chemists introduce new DNA to a crop to make it more proof against threats, like pests and unhealthy weather, so they can grow more.

While this will increase the crop yield, it additionally introduces potential issues. One of the important issues is that, since GM crops are proof against micro organism, they might give solution to the growth of micro organism strains which might be antibiotic-resistant , and if these antibiotic-resistant bacteria make you sick, they’ll be difficult to deal with.

One other concern is that the method of genetic modification may introduce toxic substances, like heavy metals, into the plant. If this happens, and you drink lots of genetically-modified soy milk, it could actually result in well being issues, like heavy metallic toxicity. However, you’d must drink large portions of soy milk over longer durations of time.

Soy Milk and Allergies

Soy can be one of many high eight allergens, and it’s attainable that genetic modification could make the chance of allergies even greater. In keeping with a report printed in the Journal of Food Science and Expertise in December 2013, genetic modification can introduce another allergen into the soy milk with out the general public (or the meals manufacturers) even being conscious.

The report notes that when patients who have been allergic to Brazil nuts, however not soybeans, consumed genetically-modified soy, they confirmed an allergic immune response. In different phrases, even if soy is not a recognized allergy, there is a possibility that GM soy milk might trigger allergy symptoms.

If you happen to’re allergic to soy, you may have to completely keep away from soy milk and any processed meals containing it. Unfortunately, soy is not always listed as such on the ingredient list, so you will should be careful for different names for soy , like:




Shoyu check




Soy Milk Advantages

Nonetheless, there are potential soy milk benefits, particularly for those who’re choosing natural soy milk, which by definition isn’t genetically-modified. Soy milk and different complete, soy meals contain B nutritional vitamins, fiber, potassium, magnesium, unsaturated fatty acids and excessive-high quality protein. The Harvard T.H. Chan School of Public Well being notes that, unlike other plant-based mostly proteins, soy is a whole protein, meaning that it comprises the entire important amino acids it’s worthwhile to keep wholesome.

However choosing fermented soy products, like miso , natto, tempeh and soy sauce, could also be more useful than choosing soy milk. The fermentation course of helps break down the soy’s sugar and protein content material, which makes it extra simply digested and absorbed by your body.

Fermentation additionally introduces some vitamins and minerals that are not current in unfermented soy products, like soy milk. In accordance with a December 2016 report in Nutrients , natto is a rich source of vitamin Okay, whereas different soy products aren’t.

Don’t Overdo It

The bottom line is that, carefully, natural soy milk and fermented soy products might be part of a healthy diet, but the bottom line is to ensure you’re selecting excessive-high quality soy merchandise and never overdoing it. An issue related to soy milk does not really need to do with the milk itself, however as an alternative, with Individuals merely consuming approach an excessive amount of soy, especially through processed foods.

Harvard Health Publishing notes that, whereas it is OKAY to consume entire soy meals like soy milk, edamame, tofu and fermented soy merchandise carefully, it’s best to keep away from processed meals made with textured vegetable protein and soy protein isolate and soy isoflavone dietary supplements, which include high doses of isoflavones and could also be doubtlessly problematic.

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