1) Sour fruits
Fruits containing vitamin C can fight colds. It can help strengthen the immune system. It increases the production of white blood cells, so it is important to fight infections. Sour fruits such as... Grapefruit Orange, Lemon, You should eat fruits such as lemons. Vitamin C is a daily essential for good health.
2) Bell pepper
If you know a lot about the vitamin C content of pickled fruits, you should know that one ounce of bell pepper contains twice the vitamin C of pickled fruits. It also contains a lot of beta carotene, which can boost your body's immunity. It can also maintain the health of your eyes and skin.
3) Green flowers
Green flowers contain many vitamins and minerals. Vitamin A, C, E and other fiber, It also contains antioxidants. It is the healthiest vegetable.
4) Garlic
Garlic is added to almost every dish. It has the power to fight any infection. Blood pressure can be controlled and blood vessels become stiff. It also slows down hardening. Garlic can boost immunity due to sulfur-containing compounds like allicin.
5) Ginger
Another medicine that can fight sickness is ginger. Reduce inflammation and sore throat, It can help reduce other illnesses. Nausea also started. Gingerol reduces heat and pain in the body. It also lowers cholesterol.
6) Spinach
Vegetables rich in vitamin C include spinach. It contains a lot of antioxidants and beta carotene, which can fight infections and strengthen the immune system. Similar to green flowers, it is a nutritious leaf that should be consumed for health. Vitamin A and other nutrients are also included.
7) Yogurt
Yogurt can stimulate your immune system and fight diseases. You can add fruit to unsweetened yogurt and eat it. It is rich in vitamin D and strengthens the immune system. Can fight infections naturally.
8) Pandan seeds
Another food that can help fight colds and flu is almonds. Almond seeds containing vitamin E and vitamin C. Vitamin E is important for immunity and also contains healthy fats. Eating about half of a bowl will fill you with the amount you need for the day.

9) Turmeric
Turmeric is used in every dish. It can treat inflammation, osteoporosis, Treats arthritis. Curcumin also reduces muscle damage.
10) Green tea
Both green tea and dry tea contain antioxidants called flavonoids. Green tea contains epigallocatechin gallate, a powerful antioxidant. Can increase resistance. Green tea is rich in L-theanine, which can produce compounds that fight germs.
11) Papaya
Papaya contains vitamin C. It contains about 224% of the daily requirement of vitamin C. It also contains papain, an enzyme that makes digestion easier. potassium, Vitamin B Folate is good for your health.
12) Kiwi fruit
Like papayas, kiwis also contain vitamin C and other essential nutrients. folate potassium, Vitamin K Contains vitamin C. Vitamin C increases white blood cells in the blood and can fight infection.
13) Chicken soup
When you have a cold and flu, drinking chicken soup will fill you up. It can boost immunity and relieve colds and flu. Drinking turkey or chicken soup contains vitamin B, which restores the health of red blood cells and regenerates new cells. Drinking chicken bone soup also contains nutrients like gelatin and chondroitin and other gut-supporting nutrients.
14) Sunflower seeds
Popphorat in sunflower seeds, magnesium Vitamin B Contains vitamin E and powerful antioxidants. Vitamin E helps maintain the immune system. Other foods such as avocado, The green leaves are also rich in vitamin E.
15) Snail Oyster
snail Foods like oysters can also boost your immunity. Rich in zinc. crab, Snail lobster, Foods such as scallops are rich in zinc. Zinc needs to be included in your daily diet. Adult men need about 11mg and women about 8mg.
https://www.healthline.com/health/food-nutrition/foods-that-boost-the-immune-system link is translated.