Both the Thymus and the Pineal Gland Shrink After Childhood

Question

Both the thymus and the pineal gland shrink after childhood.

Accepted Answer

Both the thymus and pineal gland are endocrine glands that play important roles in the immune system and circadian rhythm, respectively. They both decrease in size and activity as we age, with the thymus shrinking rapidly during adolescence and the pineal gland gradually calcifying over time.