Some hair loss in men is going to occur regardless of what these men do to prevent it. As the article mentioned, hormone changes associated with aging are just a part of the accepted aging process, and these changes can cause receding hairlines and balding. However, poor nutritional habits can also promote hair loss.
Men should consume healthy amounts of zinc and protein as well as other nutrients associated with promoting healthy hair follicles. Also, fatty foods may promote hair loss, so fast food in large amounts should be avoided.