Can I stop it?
If there's a reversible cause, it's normally possible to stop hair loss. For instance, if it's caused by iron deficiency you can stop hair loss by replenishing the body's iron stores.
A huge number of treatments have been tried to slow down and even reverse the process of male pattern hair loss - some are successful, others aren't. But many men find their hair loss slows down or stops for no apparent reason at a certain age anyway.