2023-09-07 14:47:06
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The thymus, considered “useless” in adults, might actually fight cancer
The thymus is a small gland located behind the sternum that plays an important role in the development of the immune system in children. In adults, it is often considered unnecessary, perhaps because it shrinks and produces fewer T cells – white blood cells that fight infections. Also it is not uncommon for it to be removed during heart surgery or to treat certain cancers or autoimmune diseases.
However, an observational study carried out by American researchers now suggest that removal of the thymus might have harmful consequences on health long-term. Comparing data from more than 7,000 heart surgery patients, researchers found that those who had their thymus glands removed had almost twice as likely to die within five years, and twice as likely to develop cancer during this same period.
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These cancers were generally more aggressive and recurred more often than those in the control group (which retained its thymus). It also appeared that the risk of developing an autoimmune disease was higher following a thymectomy.
The authors believe that the thymus continues to produce new T cells in adulthood and has play an important role in maintaining good health until the end of our lives. They therefore recommend preserving the precious little gland as much as possible, until more is known regarding this role in adults.
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