What Are Negative Effects of Drinking Soya Milk?

Question by Jeffrey Aquino: What are negative effects of drinking soya milk?
Can anyone give me what are negative effects of drinking soya milk? I want answers from people who really have experienced bad effects of drinking soya. Someone told me it reduces your sperm count, is this true? I drink soya because of it’s protien content, and just to make sure it doesn’t affect my health in a bad way. And please don’t answer something that comes from any advertisement promoting soya milk products, I really need answers!!! Thanks alot!

Best answer:

Answer by cjp
There are very strong phytoestrogens present in soy. It’s good for you, but moderation is the key here. The science on these effects is not finished. I have pulled back on my soy due to a pre-existing high estrogen level.

Here’s a summary of effects from a broad study.

“The most frequently reported adverse events among a total of 3,518 subjects in 49 studies (including 5 non-randomized and 3 pharmacokinetic studies) that reported adverse events were gastrointestinal in nature. These were reported in 33 of 41 comparison studies of soy diets, soy proteins, isoflavones, and phytoestrogen supplements. Most of the gastrointestinal adverse events were reported in soy diet and soy protein trials, especially the 12 studies that used purified isoflavone interventions in dosages ranging from 40 to 100 mg/day. The amount of soy protein in these trials ranged from 20 to 60 g/day, but there was no clear dose relationship between the amount consumed and subsequent adverse events. Menstrual complaints, reported in 15 studies, were also common. Six of these studies used purified isoflavone interventions in dosages ranging from 40 to 80 mg/day. However, most women in these studies were post-menopausal and the controls frequently included hormone therapy regimens. Other adverse events included musculoskeletal complaints, headache, dizziness, and rashes. In addition, there were somewhat more withdrawals from the soy arms due to taste aversion.”

And here is some good news from the University of Toronto:

“Keep in mind that this was in very large amounts of soy intake and the results were (in mega doses!): nipple discharge, breast enlargement and also minor decreases in testosterone. But “we still couldn’t find anything that was serious, and we went up to doses that are probably 30 times what you could get from normal foods,” the researcher said. “I don’t think that there are a lot of estrogenic worries. Your testicles will not shrink and you won’t have massive breast enlargement” from eating soy. However it is not easy to eat so much soy, in fact it is quite difficult!”

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