While deep-pocketed soy marketers cook up even more ways to ingest the bean, there is, unfortunately, little data as what constitutes an appropriate level of soy intake. Soy Online Service cautions that even 30 milligrams of soy isoflavones a day can wreak havoc on the body’s hormonal balance. It advises anyone with a predisposition to thyroid dysfunction to be particularly careful. If, indeed, the Asian diet is one to be emulated, then why not use soy the way they have for thousands of years: in moderation.
Thirty milligrams of soy isoflavones can be found in:
- 7 ounces of soybeans
- 4 ounces of tofu
- 8 ounces of soy milk
- 1.6 ounces of miso
- 2.8 ounces of soybean sprouts