Doctor, is there any truth to the suggestion that I can improve the function of my immune system if I eat the right foods?
The answer is yes. Some of the controllable factors that affect the integrity of the immune system are your diet, stress, your sleep, exercise and pollution in the environment. Most of your immune system is in your gastrointestinal tract (gut) and the gut seems to function best when it is maintained in a slightly alkaline state (as opposed to slightly acid state).
As a general rule, a diet that consists mainly of greens and fruits and vegetable will keep the body in a slightly alkaline state. On the other hand, a diet that consists mainly of meat and meat products will tend to keep the body in a slightly acid state.