The immune system is your defense against infections caused by bacteria, viruses and parasites. It also protects your healthy cells from cancer by identifying and then destroying abnormal cells.

Our immune system is active 24 hours a day all year long. But as we age, it’s not as strong as when we were younger. Not only do we have fewer immune cells as we get older but the ones we have don’t communicate as well with each other. It’s the reason the immune system takes longer to react to germs and why we are slower to heal.

Certain conditions, including cancer, diabetes, and obesity, can weaken an immune system, as can some fairly common medications such as steroids, some medication’s that treat inflammatory conditions, and others that suppress the immune system. No matter how old you are, or how you may be depleting your immune system, you can boost your defenses by choosing healthier behaviors.

Coroner Dr. Dwight McKenna says to keep your immune system strong, focus on a healthy lifestyle that includes eating a balanced diet rich in fruits and vegetables, getting regular moderate exercise, maintaining a healthy weight, getting enough sleep, managing stress, staying hydrated, and staying up-to-date on vaccinations. Essentially, prioritizing good nutrition, physical activity, and sufficient rest are key elements to a robust immune system.