Nuts and seeds
Nuts and seeds can be a great snack and a healthy habit to help improve your immune system. Both can add significant amounts of essential nutrients to your healthy diet. For example, almonds are rich in vitamin E and B vitamins and have prebiotic properties that help increase beneficial immunity-boosting microbes. Walnuts have anti-inflammatory properties thanks to omega-3 fats content and can help improve your immunity with vitamin B65,6. Sunflower and pumpkin seeds deliver Vitamin E, B vitamins, and important minerals like copper, iron, magnesium, and zinc.