RE: Thyroid Supplementation
Posted Thursday, January 19, 2012 at 12:27 PM
I also have a thyroid that needs regulating and have chosen Levothyroxine as the regulator. I went to a holistic nutritionist who advised me to avoid all soy and fluorides. Some experts contend that as little as 30 mg of soy isoflavones will cause trouble by compeying with hormones for the same receptor sites on cells. Because of that, they cause endocrine disruptions. The endocrine system may mistake the isoflavones for a hormone and not send out signals that the hormone needs to be produced, which could be problematic if you already have lower than normal levels of thyroid hormone production.
Avoid Fluoride (in tap water and toothpaste). Fluoride, Chlorine and iodine are chemically related. Chlorine and fluoride block iodine receptors in the thyroid gland, resulting in reduced iodine-containing hormone production and finally in hypothyroidism. I hope that helps!
One thing I would want more info on is whether the research is based on soy isolates like isoflavones that are in products apart from whole soy (all the rest of the components in soybeans) or whether they studied people who consume whole soy like edamame and tempeh and such.
As it is, I'm on levothyroxine also and avoid chunks of soy (tofu, soy milk, etc) because it messes with my reproductive hormones (PMS big time even when it's not the 'regular' PMS time).