Fitness and Health

So you can understand more about the action that is soy on the thyroid gland is necessary to explain its mechanism of action. Isoflavones are structurally similar to thyroid hormones T3 and T4. These substances inhibit the binding of iodine to the gland and therefore the concentrations of T3 and T4 decrease.

On the other hand, phytoestrogens may interact with medication that is given to treat hypothyroidism (levothyroxine), apparently these plant estrogens reduce free thyroxine concentrations in blood, thus there would be less available to stimulate thyroxine synthesis of T3 and T4 .

While no conclusive studies about the impact that has soy and its compounds on the occurrence of thyroid cancer, which contain isoflavones can interfere with the treatment to normalize thyroid function. It is therefore not advisable to use soy or products except soya lecithin.

Soy lecithin is part of the soy phytoestrogens like, but their action is totally different. Lecithin is an emulsifier that does not interfere with thyroid function, but can help control your blood cholesterol levels.

In conclusion we can say that soy adversely interfere with thyroid function, and no soy lecithin. But remember that in situations such as thyroid cancer is always prudent to consult a doctor before taking this or any dietary supplement.