1.7M views · 1.3K reactions | Skin cancer develops when some cells grow out of control. Melanoma, the most dangerous type, can grow deep into the skin and spread to other parts of the body. | WebMD | Facebook

23K views · 195 reactions | Incredible. Did you know you have 19 million skin cells? Learn more about your body's biggest and fastest growing organ: | WebMD | Facebook

35K views · 595 reactions | Vitamin D is often called the "wonder vitamin." See all the incredible ways it helps nourish your body: | WebMD | Facebook

16K views · 416 reactions | We need vitamin C to protect cells from damage, heal wounds and make our immune system work: | WebMD | Facebook