We have a hair cycle
, which means it grows, rests, and sheds.
Normally, the hair cycle
continues throughout a person's life.
This is because when you are pregnant the hair cycle
is longer and so there is less shedding and your hair grows thicker.
Another common form of hair loss in both men and women, telogen effluvium, refers to an increase in the number of hairs in the telogen, or rest, phase of the hair cycle
, which typically lasts three months in the normal growth cycle.
finds these results "very interesting, because at the moment we know very little about endogenous signals that could control the hair cycle
Furthermore it is well established that Dihydrotestostcrone (DHT) shortens hair cycle
growth, causing follicle miniaturization and producing progressively shorter and finer hair.