Hairs grow average 1.5-2.2 millimeters a week.  We have 100,000 million hairs. People normally lose 50-100 hairs a day. Fortunately, those hairs grow right back. There are many roots of hair loss such as,

1. The root of heredity
It often find in male than female. Most symptom of hair loss shows after teenage age passing. This case doesn't have medicine to cure. Some medicine can be relief, but if you stop using it will fall out again.

2. The root of taking medicine
It is side effect of medicine you took such as major depressive disorder medicine, Arthritis medicine and over doses of vitamin A as well.

3. The root of giving birth
The symptom of hair loss may show after giving birth about 3-6 months cause by so much blood loss. It will disappear even if it isn't cured.

4. The root of illness
Thyroid disease, iron level problem and missing some nutrient that necessary for hair such as protein can be caused of hair loss.

5. The root of fungus infection
Most common in children, it is easy to cure by using medicine. It is contagious disease so you should bring patient to doctor to cure immediately.

6. The root of stress
Some part of your hairs falling out during tension. If you relax it will return to normal.

         To save your hair, try a more sensitive diet, and get your nutrients from foods. Remember that slow and steady wins the race, so take your time and lose the weight, but keep your hair.
         Trying to pick through the slew of produces claiming to restore hair is enough to make you pull your hair out. Your option ranges from natural to surgical and permanent to temporary. No one treatment is right for everyone. With million of men looking for hair loss cures, you’re bound to have people trying to take advantage of you. To protect your health, wallet, and self esteem, carefully check out the pros and cons, and consult experts before you buy.
         Although most oral and topical hair loss treatments have not proved effective, you may find an herbal mixture that works for you. Royal jelly, nettle, and jojoba oil all claim to stimulate hair growth. A mixture of lavender oil, calamus oil, gentian tincture, and rosemary spirit rubbed on your scalp is said to put hair on your head.