Physical exercise and immunity

The Impact of Physical Exercise on Immunity

Moderate, regular physical exercise has been shown to strengthen the immune system. One study found that individuals who exercise consistently have higher levels of virus-fighting antibodies in their blood, reducing their risk of upper respiratory tract infections. Another study revealed that such exercise boosts the production of T lymphocytes, key players in immune defense.

However, intense and prolonged exercise may have the opposite effect, leading to lower-than-normal levels of lymphocytes. This reduction is likely caused by the release of cortisol, a hormone that suppresses immune responses, during heavy physical exertion.

In summary, moderate exercise supports immune health, while excessive exercise may weaken it.

Always consult with a healthcare provider for diagnosis or treatment.