Question

Hardest substance of the human body is_____________.

Answer 1

1. Teeth are the hardest substance in the human body.
2. The enamel on your teeth is the hardest and most highly mineralized substance in your body.
3. It covers the outer layer of each tooth and it is the most visible part of the tooth.
4. The enamel is made up mostly of minerals, primarily hydroxyapatite.

Final answer: Hardest substance of the human body is enamel.