Is it true that human hair has a predetermined number of cycles? If someone experiences TE or chronic TE are they using those cycles prematurely and causing their hair to thin earlier than it would have?
It is true that life of a hair determines the number of hair cycles you will have. I was bald in the crown by the time I was 45, so my hair there died… and then I had transplants to correct it.
If your hair cycle (from telogen to anagen) is 3 years and you have 10 cycles genetically programmed for that hair, then that hair will die at the age of 30. Although I am making this example sound simple, it is certainly not that simple… but male pattern baldness does probably follow that rule. I do not believe that telogen effluvium changes the hair cycle’s length, but just the telogen phase of that cycle.