Research also indicates that flavonoids may help to prevent the common cold in otherwise healthy people. People use ginger in a variety of dishes and desserts, as well as in teas. According to a review, ginger has anti-inflammatory and antioxidative properties and is likely to offer health benefits.

However, more research is necessary to confirm whether or not it can effectively prevent illness. One review looked at whether taking garlic supplements containing allicin reduced the risk of getting a cold. The group of participants taking a placebo had more than double the number of colds between them than those taking the garlic supplements.

However, the researchers concluded that more research is necessary to determine whether or not garlic can help to prevent colds. Green tea contains only a small amount of caffeine, so people can enjoy it as an alternative to black tea or coffee. Drinking it may also strengthen the immune system.

As with blueberries, green tea contains flavonoids, which may reduce the risk of a cold. Kefir is a fermented drink that contains live cultures of bacteria that are beneficial for health.

Initial research suggests that drinking kefir may boost the immune system. According to a review , various studies have shown that regular consumption of kefir can help with:. The majority of the research that supports this was carried out on animals or in a laboratory.

Researchers need to perform additional studies to understand how kefir may prevent disease in humans. Sunflower seeds can make a tasty addition to salads or breakfast bowls.

They are a rich source of vitamin E , an antioxidant. In the same way as other antioxidants, vitamin E improves immune function. It does this by fighting off free radicals, which can damage cells. Almonds are another excellent source of vitamin E.

They also contain manganese, magnesium , and fiber. A small handful or a quarter of a cup of almonds is a healthful snack that may benefit the immune system. Oranges and kiwis are an excellent source of vitamin C, which is the vitamin that many people turn to when they feel a cold developing.

While scientists are still not sure exactly how it helps, vitamin C may reduce the duration of common cold symptoms and improve the function of the human immune system. For people trying to avoid the sugar in fruit, red bell peppers are an excellent alternative source of vitamin C.

Stir-frying and roasting both preserve the nutrient content of red bell peppers better than steaming or boiling, according to a study on cooking methods. That said, it is important to remember that the immune system is complex.

Eating a healthful, balanced diet is just one way to support immune health. It is also essential to be mindful of the other lifestyle factors that may affect immune system health, such as exercising and not smoking. Anyone who gets frequent colds or other illnesses and is concerned about their immune system should speak to a doctor.

In this article, we describe types of foods that may weaken the immune system and others that may help support it. Learn more here. Caffeine-free hot tea can count as part of your daily water tally.

Exercise is essential to preventing chronic illnesses such as heart disease and high blood pressure, and to keep your weight in control. Exercise also contributes to a healthy immune system. It promotes good blood circulation, which helps your immune system do its job more efficiently.

Daily stress can overwork your immune system and drain your ability to stay healthy. Big and little daily stressors can constantly push your immune system. Make time each day to do things to "refill your tank. It can include setting aside time to read, meditate, talk a walk, do a hobby or get a massage.

Discover the benefits of mindfulness Deep Breathing techniques. Sleep is essential for the health of your body and brain. Good sleep helps strengthen your immune system. Adults should try for at seven to eight hours of sleep a day. Children and teens need more sleep. A healthful diet is important to a healthy immune system.

An eating plan that focuses on plants, fiber, protein and healthful fats can help you feel better and heal faster. Protein also is essential to a body that is healing. Some of the best foods to boost immunity contain probiotics, live bacteria and yeasts that are good for your gut health , and digestive system.

Probiotics can be found in fermented and cultured foods. Look on the food label for "live active cultures". What You Really Need to Do to Boost Your Immunity. October 20, Share this page Share on Facebook Share on X formerly Twitter Share on LinkedIn Share by email.

Weak immune systems It is almost never the case that your immune system is completely weak, says Milner. How to know if your immune system is weak or strong Unfortunately, most people find out that one part of their immune system is weak when they get an infection.

How to boost your immune system Scientists are studying direct connections between lifestyle choices and strong immune systems.

How to keep your immune system strong Milner recommends: Eat as many fresh fruits and vegetables as you can, every day. Stay physically active with walks and exercise.

Sleep for at least seven hours a night. When the body does not get enough sleep, the immune system is negatively affected. Minimize stress. Drink less alcohol. Do not smoke. Get recommended vaccines. Ask your doctor about zinc.

It is regulated by cells and organs in our body like the spleen, thymus, bone marrow, and lymph nodes. When a foreign substance enters the body, these cells and organs create antibodies and lead to multiplication of immune cells including different types of white blood cells that are specific to that harmful substance and attack and destroy it.

Our immune system then adapts by remembering the foreign substance so that if it enters again, these antibodies and cells are even more efficient and quick to destroy it. Antigens are substances that the body labels as foreign and harmful, which triggers immune cell activity. Allergens are one type of antigen and include grass pollen, dust, food components, or pet hair.

Antigens can cause a hyper-reactive response in which too many white cells are released. For example, an allergy to mold triggers symptoms of wheezing and coughing in a sensitive individual but does not trigger a reaction in other people. When pathogens attack healthy cells and tissue, a type of immune cell called mast cells counterattack and release proteins called histamines, which cause inflammation.

Inflammation may generate pain, swelling, and a release of fluids to help flush out the pathogens. The histamines also send signals to discharge even more white blood cells to fight pathogens. However, prolonged inflammation can lead to tissue damage and may overwhelm the immune system.

Autoimmune disorders like lupus, rheumatoid arthritis, or type 1 diabetes are partly hereditary and cause hypersensitivity in which immune cells attack and destroy healthy cells.

Immunodeficiency disorders can depress or completely disable the immune system, and may be genetic or acquired. Acquired forms are more common and include AIDS and cancers like leukemia and multiple myeloma.

Eating enough nutrients as part of a varied diet is required for the health and function of all cells, including immune cells. Certain dietary patterns may better prepare the body for microbial attacks and excess inflammation, but it is unlikely that individual foods offer special protection.

Examples of nutrients that have been identified as critical for the growth and function of immune cells include vitamin C, vitamin D, zinc, selenium, iron, and protein including the amino acid glutamine. Diets that are limited in variety and lower in nutrients, such as consisting primarily of ultra-processed foods and lacking in minimally processed foods, can negatively affect a healthy immune system.

It is also believed that a Western diet high in refined sugar and red meat and low in fruits and vegetables can promote disturbances in healthy intestinal microorganisms, resulting in chronic inflammation of the gut, and associated suppressed immunity.

The microbiome is an internal metropolis of trillions of microorganisms or microbes that live in our bodies, mostly in the intestines. It is an area of intense and active research, as scientists are finding that the microbiome plays a key role in immune function. The gut is a major site of immune activity and the production of antimicrobial proteins.

A high-fiber plant-rich diet with plenty of fruits, vegetables, whole grains, and legumes appear to support the growth and maintenance of beneficial microbes. Certain helpful microbes break down fibers into short chain fatty acids, which have been shown to stimulate immune cell activity.

These fibers are sometimes called prebiotics because they feed microbes. Therefore, a diet containing probiotic and prebiotic foods may be beneficial.

Probiotic foods contain live helpful bacteria, and prebiotic foods contain fiber and oligosaccharides that feed and maintain healthy colonies of those bacteria. Animal studies have found that deficiencies in zinc , selenium , iron , copper, folic acid , and vitamins A , B6 , C , D , and E can alter immune responses.

Epidemiological studies find that those who are poorly nourished are at greater risk of bacterial, viral, and other infections. Eating a good quality diet, as depicted by the Healthy Eating Plate, can prevent deficiencies in these nutrients.

However, there are certain populations and situations in which one cannot always eat a variety of nutritious foods, or who have increased nutrient needs. In these cases a vitamin and mineral supplement may help to fill nutritional gaps.

Studies have shown that vitamin supplementation can improve immune responses in these groups. The elderly are a particularly high-risk group. The immune response generally declines with increasing age as the number and quality of immune cells decreases. This causes a higher risk of poorer outcomes if the elderly develop chronic or acute diseases.

In addition, about one-third of elderly in industrialized countries have nutrient deficiencies. Diet variety may also be limited due to budget constraints or lower interest in cooking for one person; poor dentition; mental impairment; or lack of transportation and community resources to obtain healthy food.

Megadose supplements many times the RDA do not appear justified, and can sometimes be harmful or even suppress the immune system e. If you want to explore taking a probiotic supplement, talk to your health care provider.

A variety of options are available in the vitamin section of grocery and natural food stores. Eating a healthy, balanced diet can help keep you well.

Eat a rainbow of vegetables and fruits daily to ensure you're getting a variety of nutrients. Lean proteins and complex carbohydrates, like brown rice and quinoa, are also part of a healthy diet.

Reduce how much you consume of processed foods, sugar and beverages that have few nutrients such as soda and alcoholic drinks. Nutritional and health benefits that can boost your immune system.

If you want advice on how to get and stay health talking with your health care provider is a good first step. Articles for your health.

HEAL KNOWLEDGE TO DEAL WITH ILLNESS. PREVENT Six ways to boost your immune system naturally before you get sick Asma Siddiqi, MD. Stress can overwork your immune system and drain your ability to stay healthy.

Here are six healthy living strategies you can use to boost your immune system: drink plenty of fluids exercise regularly limit stress get plenty of sleep include probiotics from foods or supplements eat a colorful, well-balanced diet. Water is essential for immune health Water is still the best thing you can drink.

Exercise regularly to strengthen immunity Exercise is essential to preventing chronic illnesses such as heart disease and high blood pressure, and to keep your weight in control.

Reduce stress for increased immune function Daily stress can overwork your immune system and drain your ability to stay healthy. Discover the benefits of mindfulness Deep Breathing techniques Sleep, a natural immunity booster Sleep is essential for the health of your body and brain.

Food and drink to boost your immune system A healthful diet is important to a healthy immune system. Some foods that contain probiotics are: kombucha fermented, lightly sweetened black or green tea drink and kvass traditional Slavic and Baltic fermented beverage made from rye bread unpasteurized sauerkraut and kimchi yogurt, kefir a thick, creamy and drinkable yogurt , lassi a drink made from a yogurt or buttermilk and leban a liquid or semisolid food made from curdled milk tofu, miso, natto fermented soybeans , shoyu or tamari types of Japanese soy sauce and tempeh an Indonesian dish made from fermented soybeans If you want to explore taking a probiotic supplement, talk to your health care provider.

Regularly eating a variety of nutritious foods rich in vitamins and minerals, such as citrus fruits, spinach, red peppers, and ginger may help boost your immune system. Feeding your body certain foods may help keep your immune system strong. Plan your meals to include these 15 powerful immune system boosters.

No supplement will cure or prevent disease, and no supplement or diet can protect you from COVID Currently, no research supports the use of any supplement to protect against COVID specifically. Vitamin C is thought to increase the production of white blood cells , which are key to fighting infections.

Most citrus fruits are high in vitamin C. The recommended daily amount for most adults is:. Ounce for ounce, red bell peppers contain almost 3 times as much vitamin C mg as a Florida orange 45 mg.

Besides boosting your immune system, vitamin C may help you maintain healthy skin. Beta-carotene, which your body converts into vitamin A , helps keep your eyes and skin healthy. Broccoli is supercharged with vitamins and minerals. Packed with vitamins A, C, and E, as well as fiber and many other antioxidants , broccoli is one of the healthiest vegetables you can put on your plate.

The key to keeping its power intact is to cook it as little as possible — or better yet, not at all. Research has shown that steaming or microwaving are the best ways to keep more nutrients in the food. Garlic adds flavor to food and has long been used for medicinal purposes.

Early civilizations recognized its value in fighting infections. Garlic may also slow down hardening of the arteries, and people use it to treat high blood pressure. Ginger is another ingredient many turn to after getting sick. Ginger may help decrease inflammation, which can help reduce a sore throat and inflammatory illnesses.

It may also help with nausea. Ginger may also decrease chronic pain and might even possess cholesterol-lowering properties.

Similar to broccoli, spinach is healthiest when cooked as little as possible so that it retains its nutrients. However, light cooking makes it easier to absorb the vitamin A and allows other nutrients to be released from oxalic acid , an antinutrient.

Check out some spinach recipes here. These cultures may stimulate your immune system to help fight diseases. Try to get plain yogurts rather than the kind that are flavored and loaded with sugar. You can sweeten plain yogurt yourself with healthy fruits and a drizzle of honey instead.

Yogurt can also be a great source of vitamin D , so try to select brands fortified with this vitamin. Clinical trials are even in the works to study its possible effects on COVID Research so far suggests that vitamin D deficiency may increase the risk for COVID19 and the severity of disease progression in people with the infection.

Experts therefore believe supplementation may protect people with a vitamin D deficiency. However, there is no evidence that vitamin D can treat a COVID19 infection. When it comes to preventing and fighting off colds, vitamin E tends to take a backseat to vitamin C.

However, this powerful antioxidant is key to a healthy immune system. Nuts, such as almonds , are packed with the vitamin and also have healthy fats. Adults only need about 15 mg of vitamin E each day. Sunflower seeds are full of nutrients, including phosphorous , magnesium , and vitamins B6 and E.

Vitamin E is important in regulating and maintaining immune system function. Other foods with high amounts of vitamin E include avocados and dark leafy greens.