Yes, losing weight can help reduce gynecomastia, especially if the condition is
caused by excess body fat. Excess body fat can cause an increase in estrogen levels, which can lead to the development of breast tissue in men. Losing weight through a combination of diet and exercise can help reduce overall body fat and lower estrogen levels, which can lead to a reduction in breast tissue. However, losing weight may not be effective for all cases of gynecomastia, especially if the breast tissue is primarily glandular in nature. In some cases, surgery may be needed to remove the excess breast tissue.