12Fatty Fish
Herring, mackerel, and salmon are high in omega-3 fatty acids, which can alleviate inflammation boost your white blood cells. In addition, this nutrient can increase airflow and protect your lungs against respiratory infections and colds. Many studies have shown that consuming fatty fish regularly might be helpful in warding off different flu strains. Salmon is also a great source of vitamin D. The recommended dose is 2 to 3 4-ounce portions each week. Avoid tilefish, king mackerel, swordfish, and shark if you are breastfeeding or pregnant because they contain a high level of mercury. [12]















