Immune System Archive

Inflammation can be a beneficial sign that the body's immune system is fighting an infection, but it can also linger over time, damaging the body. There is evidence that eating a diet heavy in foods that promote inflammation can increase the risk for certain health problems, and also that a healthy diet can reduce inflammation.

Irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD) are different, though they can have similar symptoms. IBS symptoms seem to arise from hypersensitive nerves and abnormal muscle contractions in the digestive tract, while IBD results from a problem with the immune system causing inflammation.

There’s no evidence that maintaining a healthy lifestyle will suddenly boost the immune system. However, it’s clear that healthy lifestyle habits contribute to overall health, supporting the body’s ability to fight infections instead of creating new problems. Healthy habits that help maintain a robust immune system include getting seven to nine hours of sleep per night, exercising, reducing stress, eating a healthy diet, not smoking, drinking alcohol only in moderation, maintaining a healthy weight, and getting underlying conditions under control.

The health risks of loneliness and isolation have been known for some time, but more recently research has shown the specific effects in the brain. Finding ways to make connections with other people is the best "medicine" to alleviate the mental and physical effects of loneliness.

Probiotics can be helpful in some cases, but it's unclear whether they are safe for all older adults.