There are many varying reasons why some people’s hairlines start to recede. One prominent reason is aging, but apart from that, there are also genetic reasons like male pattern baldness or simply runs on the family.
There are also those that suffer from congenital hair loss conditions like alopecia areata. This condition is an autoimmune disease that causes hair loss. Alopecia areata doesn’t only mean that you’d have a receding hairline, but people with this condition would go bald and lose body hair as well.