Hair loss usually develops gradually and may be patchy or diffuse (all over). Roughly 100 hairs are lost from your head every day. The average scalp contains about 100,000 hairs.
Think about it. Two years is a long time for hair to be subjected to the daily wear and tear of the environment, washing, drying, brushing, combing and any chemical processing. Just imagine what a piece of silk or fine fabric would look like after 2 years of constant handling.
Unfortunately many people are not aware of the fact that while hair can be extraordinarily resilient, once it has emerged from your scalp is has no facility for renewing itself. It is considered to be dead protein.

Your hair ultimately reflects the overall condition of your body. If your body is healthy and well nourished, your hair will be your shining glory.
If you are having any health problems or suffering from any nutritional deficiencies, your hair may stop growing or show damage.
The average person has around 100,000 strands of hair on their head and the average rate of growth is a mere one-half of an inch per month. By the time the ends of your hair actually grow down to your shoulders, they are approximately two years old.
Diagnostic tests that may be performed (but are rarely needed) include:
Microscopic examination of a plucked hair
Skin biopsy (if skin changes are present)
