Can FT3 help with Abnehmen?

FT3 (free triiodothyronine) is the active thyroid hormone that can increase basal metabolic rate. Theoretically, higher FT3 levels could boost calorie expenditure and aid weight loss. However, evidence for using FT3 supplementation specifically for weight loss is weak and potentially dangerous. In individuals with normal thyroid function, exogenous FT3 does not reliably cause weight loss and can lead to cardiac arrhythmias, muscle wasting, and suppression of endogenous thyroid function. Clinically, FT3 is only used for diagnosed hypothyroidism or specific thyroid disorders. Consumer lab tests measuring FT3 often provide limited actionable insight for healthy individuals because reference ranges are wide and values fluctuate diurnally. Low FT3 may indicate hypothyroidism or caloric restriction, but supplementing without medical indication is not evidence-based. Instead, focus on diet, exercise, and sleep. Safety note: FT3 is a prescription drug and should never be taken without medical supervision.