You have about 100,000 hairs on your head. It is completely normal to lose about 100 per day. When you start losing more than 100 hairs per day that is not normal. This is usually a sign there is something else going on. In today's podcast, Dr.Martin Jr. discusses 5 causes of hair loss. He also discusses the 3 phases of hair growth and what you need to do to help with hair loss. If you are suffering from hair loss or weak, thinning hair, you don't want to miss this episode!