Guys,

1. If u have hair thin, take more protein..faster way, supplement...coz u have malnutrition
2. Some cause by a germs inside the hair pores, so u drop a lot
3. If u have oily hair, the oil can blockade the hair pores, thus in long term, it become a skin.
4. Styling ur hair too much can damage the hair roots...or u dyed ur hair often...unless u do treatment for ur hair all the time which i can see very costly....

I had it too... 1 and 3 are my issues. Now my hair is thicker d. This is self-experienced. For 2, u need to go see a specialist to check on it under microscope... Hope that can enlighten ppl here...