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Overactive thyroid is associated with the excess production of thyroid hormones that impacts a range of physiological functions throughout the body. (source)
An overactive thyroid can have negative effects on multiple systems throughout the body. This may cause symptoms such as fatigue, muscle weakness, and reduced work capacity during physical activities. Optimal thyroid hormone levels can support efficient metabolism and positively affect physiological processes throughout the body leading to improved physical and cognitive performance.
Supplement with L-Carnitine: L-carnitine has been shown to improve markers of overactive thyroid. (source) L-carnitine blocks the entry of thyroid hormones into the nuclei of target cells. This inhibition reduces the overall action of thyroid hormones at the cellular level, thereby improving markers of overactive thyroid. (source) Recommendation: Supplement with at least 2 g of L-carnitine daily.
Supplement with Selenium: Selenium has been shown to have positive effects on overactive thyroid. (source) Selenium is vital for the proper functioning of enzymes that convert thyroid hormones, which helps regulate thyroid hormone levels and normalize thyroid gland function. (source, source) Recommendation: Supplement with at least 50 mcg of selenium daily.
