Overweight and obesity are potential causes of gynecomastia, and the excess fat actually increases estrogen levels. Making better food choices to
help reduce your body
weight may help decrease breast size. Fill your diet with low-calorie, nutrient-rich foods to help reduce your calorie intake and promote weight loss. Good choices include fruits, vegetables, whole grains, nonfat dairy foods and lean sources of protein such as poultry, lean red meat, seafood and beans.