Understanding Gynaecomastia Gynaecomastia is caused by an imbalance in the oestrogen and testosterone hormones. In men where the body produces more oestrogen than testosterone, leading to the development of breast tissue in men. Other factors that can contribute to male chest enlargement include certain medications, such as anabolic steroids, antidepressants, and anti-androgens, as well as underlying medical conditions, such as liver…
