Soybeans are rich in nutrients, particularly protein with 35-38% of their calories derived from this nutrient. 40% of soy nutrients come from fat with 63% of that unsaturated.
But it’s the micro-nutrients that concern most of us, specifically phyto-estrogens. Let’s clear this up so we can enjoy the many benefits of tofu.
Phytoestrogens are plant-derived xenoestrogens not generated within the endocrine system but consumed by eating phytoestrogenic plants, like soybeans. Also called "dietary estrogens", they are a diverse group of naturally occurring nonsteroidal plant compounds that, because of their structural similarity with estradiol, have the ability to cause estrogenic or/and anti-estrogenic effects by sitting in and blocking receptor sites against estrogen.
This is important to understand as women are being advised by medical professionals to avoid soy in their diet because of estrogen. Nothing could be further from the truth. If you read the definition carefully, you will understand that what phytoestrogens do is keep the human body hormonally balanced by blocking or absorbing estrogen as needed. There is nothing to fear from traditional soy products like tofu, tempeh, edamame, soy sauce and miso.
Always choose organic soy products to avoid any GM varieties of soybeans.