T3 And T4 Thyroid Hormones
T3 and T4 thyroid hormones play essential roles in the body especially when it comes to boosting metabolism and burning fat. Therefore, your body's production of T3 and T4 thyroid hormones must be optimised for maximum weight loss.
The thyroid gland is the site for the production of thyroxine (T4) and a portion of the triiodothyronine (T3), which boosts the metabolic rate, and therefore the fat burning ability, of all cells. Triiodothyronine (T3) is about 5 times more active than T4 and its production in the body results mainly from the thyroid and liver's conversion of T4 into T3.
Nutrients required for T3 and T4 thyroid hormone productionIn order to function optimally and avoid thyroid problems, the thyroid gland requires iodine, selenium and and the amino acid, tyrosine. There are also a variety of other nutrients that are required for the conversion of T4 into T3. All of the required nutrients for optimum thyroid hormone production and conversion are found in BCN's Thyron, which is a powerful, natural thyroid supplement.
Phosphates, which have a positive impact on the levels of ATP in the liver may assist in the conversion of T4 to T3 since reduced ATP levels, as a result of dieting, inhibit the conversion.
Studies show that diets that restrict carbohydrates cause a reduction in T3 levels and that administering carbohydrates can restore T3 levels after they have declined. This is one reason why the fat piles back on after carbs are re-introduced into the diet. Accordingly, it is preferable to reduce carbs without eliminating them altogether, change the source of carbs (to more fruit and vegetables and less processed carbs) and combine this with periodic carb-load meals, i.e. have a 'Treat Day').
The impact of sleep on thyroid hormonesSleep also has a marked affect on the body's production of thyroid hormones. Sleep deprivation causes a decrease in the body's production of these hormones.
The effect of exercise on thyroid hormone productionExercise has the affect of increasing the production of thyroid hormones, however, the levels of these hormones in active individuals is normal, due to the higher 'turnover' that occurs in their bodies. This means that even though the production of these hormones increases, they are also metabolised by the body at a higher rate. If an excessive amount of exercise is performed (overtraining) then there is a reduction in the level of T3.
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