4. Moles
These are little knobs of skin that are darker than your normal skin color. The majority of people have at least one mole, and many people have between 10 and 40 moles. In recent years, due to skin cancer panic, people have rushed to have moles removed the moment they appear. Not all moles lead to skin cancer but strange-looking ones that are bigger, darker, or different somehow to the others that you have, should be medically examined. Odd-looking moles are more likely to develop into melanoma, a strand of skin cancer.
A 2010 study also found that interestingly, moles reveal much about your health. If you have more than 100 moles, you are less likely to develop osteoporosis. It turns out if you are prone to moles your skin will also age better! The cells in people with excess moles have an ability to repair themselves, thanks to the way cell division is positively affected in these cells.