What is the hardest substance in the human body?

The hardest substance in the human body is enamel, which is the outer covering of our teeth. Enamel is composed mainly of hydroxyapatite, a crystalline form of calcium phosphate, along with other minerals such as fluoride and carbonate.

Enamel is incredibly strong and durable, providing protection for our teeth against the wear and tear of daily activities like chewing and biting. However, despite its strength, enamel can still be damaged by habits such as teeth grinding, consuming acidic foods and drinks, and poor oral hygiene practices.

Once enamel is damaged, it cannot regenerate or repair itself, so it is important to take good care of our teeth to preserve this hard and vital substance. Brushing and flossing regularly, avoiding acidic foods and drinks, and visiting the dentist for regular check-ups are all important steps in maintaining healthy enamel and overall dental health.