The 4-Hour Body - An Uncommon Guide to Rapid Fat-Loss, Incredible Sex, and Becoming Superhuman - Timothy Ferriss
A high percentage of vegans use soy as their primary source of protein. This is a bad idea.
Based on all of the literature I've reviewed, the phytoestrogens in soy are dangerous for adults
and, to a greater extent, children, even when used in moderation. Studies have demonstrated
that just 30 grams of soy per day (about two tablespoons) for 90 days can disrupt thyroid
function, and that's in Japanese subjects. The Swiss Federal Health Service equated 100
milligrams of iso avones (phytoestrogens) to a single birth control pill in terms of estrogenic
impact. How many birth control pills are you inadvertently eating each day?
FOOD TOTAL ISOFLAVONES
(IN 100 G SERVING)
Instant soy beverage 109.51 mg
Raw soybeans (Japanese) 118.51 mg (in less than half a cup)
Fried tofu 48.35 mg (78 small pieces)
annaabi.ee 
