The most common reason of hair loss is a hereditary condition that happens with aging. This condition is called androgenic alopecia, male-pattern baldness and female-pattern baldness.

These home remedies will help you alot :

Try avoiding brushing your hair immediately after hair wash
Consume enough water
Avoid unhealthy intake in your body (Alcohol/ smoking)
Try including raw vegetables and salads in your diet
Try to make your sleeping habits correct

Here are some treatments described in Ayurveda which reduces hair fall and cure the hair loss problem: Shirodhara, Shiro Abhyanga, Shirolepa hair pack, Nasya, Herbs.

Some of the causes of hair fall are :

Exposure to an unhealthy environment
Excessive Sweating
Sleeping pattern
Depression
Living Habits
Diseases
Alcohol consumption