Hair loss may be caused by genetics, hormonal fluctuations, illnesses, or a typical aspect of age. Though it's more prevalent among men, hair loss on the head can happen to anyone. Usually, being bald means having a lot of hair falling out of your head.Hair loss may be caused by genetics, hormonal fluctuations, illnesses, or a typical aspect of age. Though it's more prevalent among men, hair loss on the head can happen to anyone. Usually, being bald means having a lot of hair falling out of your head.