My 4 year son gets sick often. His immunity is weak. What should be done.

A. Hello, recurrent falling sick is indication of poor immunity and hygine.. give immunity booster food substance like-Eggs, youghrt, spinach, nuts like almond, wallnut, sunflower seeds, apple, and all seasonal fruits and vegetables and , oats, garlic, carrot, broccoli, butter, beans , mint juice, milk and milk products.. Maintain proper hygine and educated your kid for hand washing.