Follow Following Unfollow Pending Disabled. A , Cardiology (Cardiovascular Disease), answered. If you're counting, you either have very little hair or are in a desperate need for a hobby. The average person's head has up to 150,000 hair follicles (the entire adult body has 5 million). That number is constant over a lifetime; it's hereditary, so only the thickness of your hair, its condition, and whether you lose the actual strands that come from those follicles can change.