Health
How the immune system changes with age
The immune system plays an important role in protecting the body from disease and injury. As we age, our immune system can become less resistant and unpredictable, making us more susceptible to infections, disease and inflammation.
Researchers call it “immunosenescence” or “inflammation.”
immunosenescence This means that as people age, their immune systems become less efficient for a number of reasons. Researchers say changes occur in the thymus, a gland in the chest that plays a multipurpose role in supporting various immune cells. Older adults lose adaptive immunity powered by memory T cells – The “T” for the thymus is because these white blood cells originate in the bone marrow and migrate to the thymus, which is located behind the heart..
The aging immune system is one of the reasons doctors recommend older people get their annual flu shot. Most flu deaths and hospitalizations affect people over the age of 65.
The combination of inflammation and aging results in:cause inflammation” If inflammation is an immune response to injury or infection, it indicates that the body is functioning normally. But chronic inflammation in the absence of specific irritants can be a sign of trouble, such as autoimmune disease. Chronic inflammation is also a risk factor for cardiovascular disease and cancer in the elderly.
How and why the immune system changes over time is not fully understood. But even in old age, healthy habits can help protect against disease and support a healthy immune system. They include:
- avoid smoking and limit alcohol.
- Eat a varied diet that is rich in nutrients and low in processed foods and red meat. Be aware of things that interfere with good nutrition, such as decreased appetite, budget problems, and difficulty going out to buy food.
- Get enough sleep.
- stay physically active and maintain a healthy weight.
- Talk to your doctor about which vaccine is right for you. Some influenza vaccines are specially formulated for older people to boost the body’s immune response to infection.
- stay socially connected and reduce stress.
Learn more about the immune system:
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