Hypothyroidism causes

[Guest guest]

Hey ,

This might be the answer for you on why exercising alot affects you negatively....what do you think?

Patty

http://www.alternativemedicine.com/digest/issue22/22004R00.shtml

Reviving the Thyroid

What Causes Hypothyroidism?

Radiation is probably the greatest environmental cause of hypothyroidism and other thyroid problems, including tumors and thyroid cancer, states Dr. Lee. Other causes include fluoride (common in water, foods, and toothpaste) and synthetic and genetically engineered hormones (such as estrogen) in meat, dairy products, poultry and eggs, all of which block the release of thyroid hormone.

“Another dietary factor is excess polyunsaturated fats, such as soybean, safflower, canola, corn and flaxseed oils,” says Dr. Lee. “Excess iodine is also a powerful thyroid inhibitor. Most Americans get too much iodine because it is used in baked goods as a dough conditioner and in commercial iodized salt.” Mercury, a toxic heavy metal comprising up to 50% of silver amalgam dental fillings, can also affect the thyroid. It poisons an enzyme critical in converting the inactive form of the thyroid hormone thyroxine (T4) into the active form, tri-iodothyronine (T3).

Finally, endurance exercise can also depress thyroid function, notes Dr. Lee. “Exercise accelerates the breakdown of thyroid hormones, which results in a protective slowing of metabolism. This is why endurance athletes, such as long-distance runners, have a slow pulse rate and lower-than-average body temperature. This is a reversible condition,which self-corrects when exercise is lessened.”