Glossary

Hair follicles: The sacs in the skin from which hair grows.

High-risk melanoma: Melanoma that has a high probability of coming back, or recurring.

Hydrate: Taking in more water than your body uses up each day. Staying hydrated avoids dehydration, a condition in which the body does not have enough water to carry out normal functions.

Hydrated: Taking in more water than your body uses up each day. Staying hydrated avoids dehydration, a condition in which the body does not have enough water to carry out normal functions.

Hydration: Taking in more water than your body uses up each day. Staying hydrated avoids dehydration, a condition in which the body does not have enough water to carry out normal functions.

Hypothyroidism: Too little thyroid hormone. Symptoms include weight gain, constipation, dry skin, and sensitivity to the cold. Also called underactive thyroid.