Growth Stage (Anagen Phase)

• During this phase, cells are rapidly multiplying, adding to the overall shaft of the hair. The hair will continue to grow at the rate of about 1 cm every month (or 28 days). The growth stage of hair varies, depending where on your body the hair is. Leg and arm hair have shorter growth stages than head hair, which is why hair from your scalp grows longer.
  
  

Transitional Stage (Catagen Phase)

• During the catagen phase, the hair will stop growing and actually shrink in diameter (1/6 of its normal diameter) as it transitions into the resting phase. As the hair shrinks, it breaks away from what is known as the hair papilla, or the very bottom of the hair follicle that contains the blood supply.
  
  

Resting Stage (Telogen Phase)

• Hair continues to be dormant, or not grow, during the resting stage. This stage can last from 3 to 4 months. Once this stage is complete, the hair follicle will rejoin with the hair papilla and begin the growth stage again. At this time, the new hair will begin to push out the old hair, causing it to fall from the scalp.
  
  

Causes for Unnatural Hair Loss

• Hair can be lost because of both medical problems and from physical damage to the hair. For example, severe hormonal imbalances (possibly from childbirth or even birth control in women), a protein-deficient diet, severe illness such as cancer or even the flu and severe stress can all have an impact on overall hair growth and may cause hair loss.
  Hair that is mistreated could also be susceptible to hair loss. Weaves and hair braids that pull the hair too hard can damage the root of the hair and cause it to come out prematurely.
  
  

Prevention/Solution

• Although all people experiences hair loss as they become older, there are ways to prevent excessive hair loss. For example, consuming enough protein and vitamins and minerals will stimulate hair growth. In addition, limiting the use of braids and weaves can help prevent physical damage to your hair and keep your hair and scalp healthier.