“Soy products have flooded the market since the vegetarian craze of the 1970’s. It has been touted as a way to save the earth and our own health. I believed this hype and and dove head first into eating loads of soy when I was on a low fat diet from about 2000-2008. The peak of my soy over consumption was during 2009. I ate a large serving of tofu everyday because I was trying to be a vegetarian to save the animals/earth. I still ate fish but the majority of my meals had a soy products like tofu or veggie burgers. During this time I was running a lot and and training for a half marathon. After a year of this soy-centric diet I started to feel terrible. I wanted to sleep all the time, and along with gaining weight, I had terrible constipation. I went to the doctor and found out my thyroid was out of balance and I had an autoimmune thyroid problem.
I believe this was brought on by a perfect storm of factors such as a soy based diet, gluten consumption, excessive cardio and stress. Over the past two years I have seen many doctors, tried countless supplements, eaten a near perfect diet, and spent thousands of dollars to feel somewhat normal again. I want to share my story with other people who may think that eating a soy based vegetarian diet is the key to performance and longevity. I hope this message reaches other health conscious people before they experience the problems I have had trying to rebuild my health.
1. Soybeans contain anti-nutrients that block the digestive enzyme trypsin and inhibit stomachs ability to digest protein which can lead to amino acid deficiencies and hinder muscle growth.(Wapf,1995)
2. Soybeans are high in phytates which protect the seed from consumption by humans and animals. Present in all nuts and seeds phytic acids block the body from absorbing essential minerals like calcium, magnesium, iron and zinc. In many studies high grain and legume diets have been shown to cause nutrient deficiencies in less developed countries. Processed soy foods can also cause an increased risk of fatty liver.(Wapf,1995)…”