Men or Women, all people have a problem about hair loss and ask themselves "Do I have hair loss ?" in a part of their lives.

Using a medicine(cyclosporin, antitroid medicines, antikoagulants, medicines which are using at cancer treatment)
Radical changes at status of hormones (troid disorders, pituitary disorders, diabetes)
Serious stress of physical or psychological

Air pollution

Infection at skin of hairs or skin disorders.

Malnutrition (lack of ferrum and protein)

Hair loss can be seen seriously in women which aregived birth and onset of climacteric but it's usually temporary.

In women, the biggest reason for hair loss is stress.