by Richard Sagall, M.D.

With colder weather fast approaching everyone is concerned over coming down with colds, the flu, or other winter-time illnesses. It makes sense to take steps to stay healthy. The idea of “boosting your immune system” sounds inviting. But what does this really mean, and can it be done?

What is the Immune System?

The immune system consists of the parts of the body that fight infections. There are three body parts generally considered part of the immune system.

·   The lymphatic system consists of lymph nodes that filter the lymph fluid and lymph vessels that carry away waste materials. Lymphocytes also enter the lymph fluid and destroy bacteria, viruses and other foreign substances.

·   The bone marrow produces various types of white blood cells that fight infection. Red blood cells are also made in the bone marrow, but they have no role in immunity.

·   The spleen filters the blood, removing old and damaged red blood cells, white blood cells, platelets, and other foreign substances.

What Does the Immune System Do?

Simply put, the immune system keeps you healthy by fighting off invaders