No gland is literally absent in old age. However, some glands significantly atrophy (shrink) and decrease in function with age. The thymus gland is a prime example.
The Thymus Gland and Aging
The thymus gland, a vital part of the immune system responsible for producing T cells, undergoes a process of involution (atrophy) as we age. This means it shrinks in size and its function declines. This isn't the same as the gland being completely absent, but its decreased activity can impact immune function in older adults. This is supported by the provided reference stating that the thymus atrophies and declines in function with aging.
Other glands experience changes with age as well, impacting their function rather than their presence. For example:
- Lacrimal glands: These glands produce tears and undergo structural and functional alterations with age. (Source: The Aging Lacrimal Gland: Changes in Structure and Function)
- Prostate gland: In men, the prostate gland may enlarge, leading to various health issues. (Source: Prostate Problems)
It's crucial to understand that the aging process affects many bodily systems, including the endocrine system. While glands don't disappear, their functions can change, often leading to decreased hormone production or altered responses.
