Teeth are the hardest substance in the human body—even harder than bones—making ... Minerals make bones hard and strong, while collagen provides flexibility and helps bones resist breaking.

Calcium is essential to our health, but too much of it can have harmful consequences. While its benefits for bones and teeth are often praised, the risks associated with over-consumption, particularly ...

The human body can’t make vitamin C, so we have to get it through diet or supplements. If you're taking supplements, here's what to keep in mind.

Find out about the different stages of a human life cycle ... food gets into the body, through the digestive system. What happens to food in your mouth? Find out how the teeth and tongue help ...