The Human Immune System or the immune system consists of a group of cells, tissues and organs that work together to protect the body from viruses, bacteria, fungi, and parasites. When the immune system is weak, these germs can easily enter the body and cause infections such as the corona virus attack.

The outbreak of the corona virus or the novel coronavirus (2019-nCov) has made the public uneasy. The virus that first appeared in Wuhan, China can lead to death. The World Health Organization or WHO said, one of the prevention against the transmission of the corona virus is by eating nutritious foods or those that are believed to be able to increase immunity or the immune system.

1. Sweet Potatoes

D i steamed alone makes children idolize these healthy foods, especially if the old man with the creative process. The result is not only enjoyable, but the ingredients in it are also good for the health of the body of the child and other family members.

Sweet potatoes contain a lot of vitamin A which improves the health of the skin, the outermost part of the body that maintains the body as a whole. With vitamin A, the skin can immediately "fortify" from viruses that stick to its surface.

2. Kiwi

Of the many fruits that provide health benefits, kiwi is one of the most influential when the body is attacked by viruses that cause flu, colds, coughs, and so on.

When the body is already showing the symptoms of having a cold, consuming kiwifruit can immediately stop these symptoms. This is caused by the vitamins and minerals in these healthy foods that work to build immunity so that they are strong against and kill viruses.

3. Peanuts

Instead of choosing other unhealthy foods, it's better to eat peanuts as a snack when you have a viral infection.

The content of vitamin E in nuts functions as an antioxidant that can treat respiratory infections.

4. Elderberry

When the flu virus is in season, there is no other way but to try to protect yourself and stay healthy. But sometimes, the things we do don't produce results and the virus still attacks our body's defenses and health.

Eldeberry or Sambucus nigra, is a plant originating from Europe, Africa and parts of Asia. The distribution of this one fruit is most prevalent in the United States.

There is a type of elderberry that grows wild in mountainous areas in Indonesia. The plant is called Sambucus Javanica or called sangitan. Usually, elderberries are thickly leaved like a shrub with trees as high as 9 meters.

Elderberries have fruit in clusters. Where when they are young, they will be green, then red, until they turn black. The size is round and small. And often used as traditional medicine for centuries in North America, Europe, West Asia, and North Africa.

This tiny fruit has a fresh sour taste. And contains vitamin A, vitamin B, vitamin C, flavonoids, and amino acids. So don't be surprised if elderberry is used as an antioxidant, lowers high cholesterol, improves vision, strengthens the immune system, improves heart health and of course for coughs, colds, flu. And most importantly, kills viruses in the body.

5. Oranges

Citrus fruits like sweet oranges, lemons, limes and so on are very popular sources of vitamin C. Citrus fruits are an excellent source of vitamin C, a nutrient that strengthens the immune system.

Vitamin C has an immune-boosting effect that can help the body fight diseases, such as colds or viral infections. One study found that vitamin C helped prevent pneumonia and supported tetanus treatment.

6. Papaya

Papaya is a very healthy tropical fruit. This fruit is loaded with antioxidants that can reduce inflammation and fight disease. Papaya contains vitamin C which the body needs for the immune system. Papaya also has a digestive enzyme called papain which has anti-inflammatory effects.

Papaya has adequate amounts of potassium, B vitamins and folate all of which are beneficial for overall health. Papaya also has powerful antioxidant effects which can reduce oxidative stress and lower the risk of several diseases.

7. Strawberries

Berries like strawberries, mulberries, and blueberries are rich in vitamin C and bioflavonoids, phytochemicals found in fruits and vegetables that act as antioxidants and boost immunity.

One cup of strawberries, for example, contains as much as 100 mg of Vitamin C which is about the same as a cup of orange juice. Black berries like blueberries are very rich in bioflavonoids. For an optimal immune system boosting effect, eat a bowl of more than one type of berries.

8. Guava Seeds

Guava is rich in vitamin C which helps boost immunity. A strong immune system provides natural protection against infection and disease. Low levels of vitamin C are associated with an increased risk of infection and disease.

In fact, one guava provides about double the amount of daily intake for vitamin C. This amount is almost double the amount obtained from citrus fruits. Vitamin C helps kill bad bacteria and viruses that can cause infections.

9. Tomatoes

Tomatoes are a major dietary source of the antioxidant lycopene which has been linked to many health benefits, including a reduced risk of heart disease and cancer. Tomatoes are rich in folate, which helps lower the risk of infection and inflammation.

Tomatoes are also a high source of antioxidants. Antioxidants protect cells against free radical damage, which can compromise the immune system. Tomatoes provide three main antioxidant vitamins namely beta-carotene, vitamin C and vitamin E which are essential for immunity.

10. Mango

Mango is a great source of immune-boosting nutrients. Mango contains vitamin A which is essential for a healthy immune system, as it helps fight infections. One cup of mango provides about a quarter of the daily target for vitamin A.

In addition, the same amount of mango provides nearly three-quarters of the daily vitamin C requirement. Mangoes also contain folate, vitamin K, vitamin E and several B vitamins, which help with immunity. Not getting enough of these vitamins and nutrients is associated with a greater susceptibility to infections.

11. Watermelon

Not only refreshing, when ripe, watermelon also has a lot of antioxidants called glutathione. This content strengthens the immune system so that it can fight infection. The lycopene that gives watermelon its red color also offers a variety of health benefits, including reducing respiratory inflammation, which helps prevent infection.

Watermelon can help reduce inflammation and oxidative damage, as it is rich in anti-inflammatory antioxidants, lycopene and vitamin C. As an antioxidant, lycopene can also benefit brain health. For example, it can help delay the onset and progression of Alzheimer's disease.

12. Pomegranate

Pomegranate has antioxidant properties. This fruit is effective in increasing the platelet count as well. It promotes the growth of lymphocytes in the body, which fight viral infections and strengthen the immune system. One cup of pomegranate seeds mixed with two glasses of water, filtered and consumed.

13. Aloe Vera Plants

The aloe vera plant contains a lot of amino acids, which can increase the platelet count and boost the human immune system. In addition, it is effective at killing disease viruses and helps you recover faster. Aloe vera juice is widely available in the market.

14. Garlic

Garlic has been believed for thousands of years to be an effective plant for herbal medicinal compositions. Has antibacterial and antiviral properties that can strengthen the immune system.

In addition, garlic is also supported by high antioxidants, phosphorus, zinc, potassium, and calcium. These compounds can help strengthen the respiratory system and also increase the number of white blood cells in the body.

The aliicin compound that makes its distinctive aroma is very useful against colds and other infections. Make it a natural medicine that strengthens our immune system and family.

Eating raw garlic before bed can kill germs that cause disease, such as flu, colds, coughs, and sore throat.

15. Ginger

Types of foods that boost the body's immune system then come from the kitchen again, namely ginger. Because ginger has antioxidant and anti-inflammatory properties. Increase the body's immune system or immunity because it is proven to have beta-carotene and capsaicin compounds.

Start consuming ginger by making it a mixture in a cup of warm tea, wedang ronde, and boiling ginger with lemongrass and palm sugar. It must provide a comfortable sensation that is warm, refreshing and healthy.

15. Bombai Onions

Fellow families with garlic, both are believed to be able to increase the body's immunity. The content of vitamins, iron, phosphorus, and various other nutritious compounds can overcome various kinds of problems in the body.

The results of R. Akrami's research, Effects of Dietary Onion (Allium Cepa) Powder On Growth, Innate Immune Response And Hemato Biochemical Parameters Of Beluga, Fish & Shellfish Immunology, showed that onion powder can be an enhancer in growth, hematological parameters, and immune function. adolescents.

Start consumption by mixing raw onions in vegetable salads, multiplying the onions in stir-fry dishes, onion chicken soup, and various other delicious nutritious foods.

16. Mushrooms

As mentioned by the WHO regarding the meat that must be cooked until cooked. Mushrooms can be an alternative to the delicious taste of meat. The sensation of processed mushrooms usually gives a taste like soy sauce chicken or meat.

Mushrooms are antimicrobial and antiviral, and contain potassium. So that mushrooms are very good for the body, then manage body fluids, speed up metabolism, maintain blood pressure balance, and of course maintain the immune system.

17. Red Peppers and Chili

Are you a spicy lover? Be thankful, red peppers and chilies are a variety of foods that boost the body's immune system. Both also contain lots of vitamin C. The results show that red bell peppers and chilies are twice as rich in vitamin C than citrus fruits.

How to eat it, of course, make chili sauce and can also sauté red peppers together with other vegetables.

18. Honey

The next type of food to increase the body's immune system is honey. Besides being sweet in the mouth, sweetness is also good for you. Honey contains high levels of antioxidants which are good for relieving coughs, keeping the throat from drying out, and eliminating phlegm., , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

The benefits of honey then play a role in calming the nervous system, regulating cholesterol levels in the blood, and maintaining the immune system.

19. Papaya Leaf Juice

Papaya is naturally rich in vitamins and minerals which help the body heal faster. It also boosts the immune system and increases the platelet count. Make a fresh papaya leaf paste by mashing it in a blender, adding a little water. Drink 4–5 teaspoons every day

20. Basil Leaf Juice

Basil leaf juice is very effective against dengue fever and kills viral diseases. Basil leaves.It boosts immunity and aids in healing from within. Take a chunk of fresh basil leaves, mash or blend it into a paste, then mix it with a glass of water and drink it regularly.