Testosterone and weight loss are linked through metabolism and body composition. Low testosterone (hypogonadism) in men is associated with increased body fat, reduced muscle mass, and insulin resistance. Studies show that testosterone replacement therapy in men with clinically low levels can reduce fat mass and increase lean mass. However, the effect is modest and not a substitute for diet and exercise. In women, the relationship is weaker, and testosterone therapy is not recommended for weight loss. Important: Testosterone is not a weight-loss drug; supplementation without medical indication carries risks (e.g., cardiovascular effects, hormonal imbalances). Evidence is human-strong for hypogonadal men, but consumer DNA tests often overstate individual predictions. If you suspect a hormonal issue, consult a physician.
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