Thyroid hormone controls the rate of metabolism. When the thyroid is under active, all body processes slow down and symptoms such as weight gain, fatigue, and decreased body temperature are experienced. Through supplementation of thyroid hormones, basal metabolic rate will be increased.
Thyroid hormones are essential to proper development of all cells in body. These hormones allow for the body to become more sensitive to all other hormones, in turn making them more effective. Thyroid hormones also regulate macronutrient (protein, fat and carbohydrate) metabolism, therefore increasing protein synthesis and ultimately energy. This allows for the body to burn more calories and use them more sufficiently. For this reason, thyroid hormones are commonly used as Fat Loss Raw Powder drugs.
This medicine does not typically cause side effects as long as proper dosages are administered. However some drawbacks of Thyroid drug use are cardiac stress and possible loss of lean body mass. Negative feedback in the thyroid can decrease natural production of thyroid hormone, causing short term decrease of metabolic rate after use is discontinued.
Many studies have proven that while calories and carbohydrates are restricted, levels of diodinase, the enzyme that activates thyroid hormone production, decreased. The conversion of T4 tetraiodothyronine Levothyroxine into T3, the active form of thyroid hormone, was became hindered . Users discovered Cytomel T3 Liothyronine sodium to be a better choice over T4 when using Thyroid drugs during Cyclic Ketogenic Diets.
tetraiodothyronine must be used in much higher doses to be as effective as T3. Subjects found they needed to use a dosage of 300 mcg/day to achieve the same results as 25-100 mcg/day of T3 (Cytomel).
Thyroid medication is frequently used by bodybuilders who are getting ready for a contest, and really, I can’t remember seeing a bodybuilder dieting for any major show in the last decade who hasn’t told me that they use Thyroid medication. Most of the time, T4 is only used when Liothyronine sodium can not be found.
Anecdotally, many bodybuilders feel that Levothyroxine is less harsh on muscle tissue and they’re able to maintain more muscle when dieting down by using T4, than compared with when they’ve used T3.