Ive read a hair has a life of around 5 years, ive recently lost my hair due to chemo and it has now regrown so in theory no hair should fall for 5 years? But in actual fact my hair is falling at a normal rate. Can you explain this? Thanks
The average hair cycle is 3 years and the average person loses 100 hairs per day, which adds up to about the total hair population on an average head (100,000 hairs).
When hair growth starts after chemo, the point in the cycle may pick up at the point in the cycle that the chemo did its damage, so the hair that grows will be in many phases of the hair cycle. That means the daily loss will be equal to the daily regrowth once all of the hair has returned.