I have avoided soy for the last 5 years. I have no doubt that my veganism and heavy soy consumption directly correlate to my development of several endocrine disorders (including hypothyroidism). So, understandably, I don't feed my family (including my two small boys) soy products, and it is easy for me to believe most negative press that I read about soy. Phytoestrogens: gah!!!

Here is my problem: my dear grandmother, who is 85 and coming for an extended visit, is totally hooked on super-sweet soymilk. It is the one thing that she consumes in quantity every day. So, it turns out, is her very health-conscious son (my uncle) who is also visiting. And the best part? Both of them are also hypothyroid. I went to the store to buy her a box of her "milk", to make her feel at home. I couldn't do it. I ended up buying some "So Delicious Coconut Milk"; still nothing I would drink or feed my family, but it seemed less evil.

So here is my question: What information/links can I provide to my family (mainly my uncle, who is a pro-athlete, carb loving, anti-fat machine) to educate them on the evils of soy? I truly didn't take much convincing, so this is one paleo battle that I don't really have arsenal for.