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Step 1
Get plenty of rest. Being tired and stressed weakens the immune system. In turn, you're more likely to develop a cold or flu. Find ways to reduce stress (regular exercise, natural herbs), and strive to sleep at least eight hours a night.
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Step 2
Adopt healthy eating habits. Fruits and vegetables contain plenty of antioxidants, which are necessary to improve the immune system after cancer and fight infections. In addition, protein (found in beef, chicken and eggs, to name a few) promotes a healthy immune system, wherein a diet low in protein weakens the body's defenses.
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Step 3
Lose body fat. Being obese or overweight slows the production of white blood cells, which can weaken the immune system. To improve your immune system after cancer, attempt to maintain a healthy body weight. Decreasing your body fat by 5 to 10 percent makes a significant difference and increases the production of antibodies.
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Step 4
Limit your sugar intake. Excessive sugar suppresses the immune system, and the body cannot effectively fight infections. Improving your immune system after cancer improves your overall health. To accomplish this, choose healthy snacks over candy and other sugary treats; drink water or natural juices instead of sodas.
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Step 5
Take vitamin supplements. If unable to boost your immune system with diet and healthy eating, consider vitamin supplements. Supplements include vitamins E and C, zinc, omega-3 and selenium, which are proven to improve white cell production and strengthen the immune system.
