Men who go bald, usually do before they are 50 years old. Fortunately, not all types of hairless is permanent. The two types of hairless are male pattern baldness, which is permanent, and hair shedding, which is not. Male pattern baldness is hereditary. The hair does not go away it just become finer and thinner, making a person look bald. Hair shedding is when the hair becomes weak and damaged and comes out in clumps. Hair shedding is usually caused by illness, stress, and malnutrition. A person can find their triggers, stop them, and be better in six to nine months.