Eat fruits & vegetables every day: Produce contains key vitamins involved in the immune system. Vitamin C in foods like strawberries, bell peppers, broccoli, and citrus, helps immune system cells function, including phagocytes (the kind that engulfs potentially harmful particles). Vitamin A helps keep tissues in the mouth, intestines, and respiratory tract healthy and is found in sweet potatoes, spinach, carrots, and cantaloupe. Remember that eating the actual fruit or veggie is better than popping single-vitamin supplements since it’s likely that all the components in the food interact to offer protection.
Get plenty of protein: Getting too little protein can weaken your immune system. Protein-rich foods supply the amino acids you need to build essential proteins in the body, including antibodies. Animal foods like beef and pork also contain zinc, a mineral that your body uses to make t-cells (you can find zinc in cashews and chickpeas too).
Include fermented foods: These are foods that are naturally preserved by bacteria, and they’re good for the “microbiome”. That’s the name for the trillions of bacteria that live in your gut, where a lot of cells involved in immunity actually reside. Fermented foods like yogurt (look for the term “live and active cultures” on the label), kefir, sauerkraut, miso, and kimchi help beneficial bacteria flourish in the gut, leaving less room for harmful bugs.
Season your meals: Every plant food has its own unique compounds that offer potential health-boosting benefits. Spices and seasonings like garlic, ginger, oregano, and cinnamon have all been researched for intriguing capabilities as anti-microbials, anti-inflammatories, and cell-protecting antioxidants. They’re not magic cure-alls, and popping them in the form of pills isn’t the same as eating the real deal. But adding flavor to foods with these ingredients means you’re getting even more beneficial compounds in the meals you eat every day.