Having a healthy immune system is key to staying healthy and preventing illness. While eating specific foods is unlikely to give your immune system a “boost” if it is already working well, certain nutrients are important for a properly functioning immune system, and eating a healthy varied diet can help prevent deficiencies in those nutrients. Here are 30 of the best immune-boosting foods to include in your diet:
Citrus fruits are high in vitamin C. A deficiency in vitamin C can alter the immune response, and eating citrus fruits can help you avoid a vitamin C deficiency. (22). Examples of citrus fruits include oranges, grapefruits, lemons, and limes.
Berries are high in antioxidants, which can help protect your cells from damage due to oxidative stress (13). Blueberries, in particular, are known for their high antioxidant content, but all berries are great to include in your diet.
Yogurt is high in probiotics, which can help support your immune system. Probiotics are beneficial bacteria that can help improve your gut health (22). Since the gut is home to a large portion of your immune cells, a healthy gut helps support a healthy immune system.
Garlic is believed to be a natural antimicrobial and can help fight infection. It contains compounds called allicin and sulfur, which are both believed to have antiviral and antimicrobial properties (22).
Broccoli is high in vitamin C and antioxidants, which are important nutrients for your immune system. It’s also rich in fiber, which can help keep your gut healthy (12).
Mushrooms are a good source of selenium, a mineral that is essential for the functioning of your immune system (12). For vegans looking for a meat substitute, mushrooms are a good option because they contain protein as well.
Spinach is high in vitamin C, vitamin E, and antioxidants, all of which can help support your immune system. It’s also a good source of iron, which can help keep your energy levels up by transporting oxygen to your cells (18).
Salmon is high in omega-3 fatty acids, which are essential nutrients that also happen to be anti-inflammatory. Like most fatty fish, salmon is also a good source of protein (20).
Tomatoes are a good source of lycopene, an antioxidant that may help prevent some chronic diseases. They also contain vitamin C and other antioxidants that can help keep your body healthy (1).
Tea is high in antioxidants, which can help protect your body from disease. Green, black, and white tea all contain antioxidants and polyphenols, but catechins from green tea in particular might help fight cold and flu viruses, according to preliminary cell studies (22).
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Nuts are a good source of vitamin E, which is beneficial for your immune system. They also contain healthy fats and protein, which can help keep you satiated and energized. Almonds, peanuts, and cashews are all good options (13).
Quinoa is a good source of protein and antioxidants, both of which can help support the functioning of your immune system. It is also high in fiber, which can help keep your gut healthy (21).
Sweet potatoes are high in beta-carotene, an important antioxidant. They are also a good source of fiber, vitamin C, and other antioxidants (13).
Oats are a good source of fiber, which can help improve gut health which helps to support your immune system. They are a great substitute for unhealthy breakfast options like sugary cereals (23).
Pumpkin is high in beta-carotene, vitamin C, and other antioxidants, all of which can help support the functioning of your immune system. It is also a good source of fiber, making it a healthy option for breakfast or as a snack (16).
Poultry is a good source of protein, zinc, and selenium, all of which are beneficial for the immune system (19). Turkey, chicken, and duck are all good options.
Beans are high in antioxidants and zinc, both of which are important nutrients for the immune system. They are also rich in fiber that’s essential for gut health (13).
Avocado is high in healthy fats known as monounsaturated fats, which are beneficial for the body in many ways (14).
Eggs are a good source of protein and selenium, both of which are needed for a properly functioning immune system (9).
Chicken soup is high in zinc. Zinc deficiencies can impair immune functioning, so it is important to get enough zinc to prevent a deficiency (19).
Dark chocolate is high in antioxidants, which can help protect your body from disease (7).
Cottage cheese is a good source of protein and vitamin B12, both of which are helpful nutrients for your immune system (5).
Cloves are thought to be a natural antimicrobial which can help fight infection (3).
Cinnamon is high in antioxidants which can help protect your body from disease (2).
Ginger is believed to be a natural anti-inflammatory which can help reduce inflammation in the body (12).
Cranberries are high in antioxidants and vitamin C, both of which can help support your immune system (6).
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Apple cider vinegar is high in antioxidants and might have antimicrobial effects which could help your body fight disease (12).
Flaxseed is a good source of omega-3 fatty acids, which are anti-inflammatory (8).
Fermented foods are high in probiotics, which can help support your gut health and therefore your immune system. They include kimchi, sauerkraut, and yogurt (22).
Olive oil is high in antioxidants and healthy fats and can help protect your body from disease (26).
Some foods should be limited or avoided for optimal health and immune functioning:
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While diet plays a large role in immune system health, there are other ways you can support your immune system as well. These include:
Smoking can have a negative impact on your immune system and can increase your risk of developing diseases, such as lung cancer (11).
Too much alcohol can also have a negative impact on your immune system (11).
Drinking plenty of fluids, especially water, can help keep your immune system functioning properly (22).
When you don’t get enough sleep, it can impair your immune system function. Aim to get at least 7-8 hours of sleep per night (27).
Exercise can help boost your immune system by increasing circulation and helping to keep your body healthy (15).
Stress can have a negative impact on your immune system and can increase your risk of developing diseases. Try to find ways to reduce stress in your life (24).
Some helpful tips include yoga, meditation, and deep breathing exercises.
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Good oral hygiene is important for preventing infection. Make sure to brush your teeth and floss regularly.
Our hands come into contact with many different types of bacteria and viruses on a daily basis. Washing your hands regularly and properly can help reduce your risk of getting sick.
There are many ways you can support your immune system naturally, through both diet and lifestyle changes. By incorporating some of the foods and tips listed in this article, you can help keep your immune system functioning at its best.
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