An Upper Limit For Soy Isoflavones

If you remember the post on 5/25, (please read it if haven't) I mentioned some of the problems with soy. One problem I mentioned is the potential for hypothyroidism in women and children. It appears that the Japanese have taken notice and may be ready to do something about the over use of soy isoflavone supplements. An article in the February 2nd edition of Asahi Shimbun stated that Japans Food Safety Commission has issued a warning about excessive soy consumption. The commission is suggesting that the upper limit for isoflavones be 70-75mgs and the maximum daily intake of isoflavones should be 30mgs for both men and women.

The commissions recommendations are not without it critics. The Japan Health Food and Nutrition Food Association questioned the data used by the government to reach its conclusions. While the Japan Health Food and Nutrition Food Association has a point, they have not offered any data of their own to show where soy isoflavones are "safe" to use.

In my opinion, please be conservative in the use of non-fermented soy products. Soy isoflavone capsules are generally safe because the isoflavone content is restricted. The same thing cannot be said for all other soy products. I have personally seen soy protein powders with 3 times the suggested upper limit for soy isoflavones. The only way that can occur is when the manufacturer spikes the protein powder with extra isoflavones. Be an intelligent consumer, know what you are putting in your body. Know what the supplement is supposed to do and if there are any potential side effects you need to be aware of.

Thanks for spending a part of your day here with me,

James