Each strand of hair has its own life cycle. Growth happens in four stages: anagen, catagen, telogen, and exogen. The hair ...

Discover the difference between hair loss and shedding, including causes, signs, and treatment options to maintain healthy hair growth.

Most humans have an average of 2-5 million hair follicles. About 100,000 of these follicles are located on your head. In your lifetime, each follicle will go through this cycle about 10-30 times.

disturbances of the hair cycle, damage to the hair shaft, or disorders affecting the follicle. The following is not meant to be an exhaustive review of possible causes of hair loss, but instead ...

View Full Profile. Learn about our Editorial Policies. Hair follicles are the perfect system to study this. Not only do they regularly cycle through phases of regeneration and destruction, but they ...

Your hair grows in a cycle of four stages or phases. The stages are anagen (growth stage), catagen (regression stage), telogen (resting stage), and exogen (shedding stage). Each hair follicle ...