The first step to boosting the immune system is adopting a healthy lifestyle. Following general health guidelines is the best step one can take to maintain the normal function of the immune system. Below are simple strategies through which the function of the immune system can be improved: • Do not smoke. • Follow a diet rich in fruits and vegetables. • Engage in regular physical activity such as exercise. • Maintain your weight at a normal and healthy level. • Get enough sleep. • Take measures to prevent infection by practicing thorough personal hygiene. • Try to minimize your stress. • Stay up-to-date with all recommended vaccines. Vaccines strengthen your immune system.

• Having regular and healthy meals. • Proper diet. The immune system requires good and regular nutrition. Although relatively few studies have been conducted on the effects of nutrition on the human immune system, research results show that people living in poverty who suffer from malnutrition are more vulnerable to infectious diseases. There is evidence suggesting that deficiencies in micronutrients such as zinc, selenium, iron, copper, folic acid, and vitamins A, B6, C, and E weaken the immune system in animals. However, there is no study confirming whether these micronutrient deficiencies also reduce the human immune system. Nevertheless, if your diet does not meet all micronutrient needs, it is better to use daily multivitamins and mineral supplements. Consuming citrus fruits is one of the strategies to strengthen the immune system. Vitamin C increases the production of white blood cells, which are key to fighting infections. Most citrus fruits are rich in vitamin C, with the most famous ones being: • Grapefruit • Oranges • Tangerines • Lemon • Lime • Red bell peppers • Red bell peppers contain nearly 3 times more vitamin C than oranges. They are also a rich source of beta-carotene. Beta-carotene is converted into vitamin A in the body and helps eye and skin health. • Broccoli is rich in vitamins A, C, and E, as well as fiber and many other antioxidants. Steaming is the best way to preserve the nutrients in this vitamin-rich vegetable. • Garlic is one of the plants whose antiseptic and immune-boosting properties have been known for a long time. It seems that the immune-boosting properties of garlic stem from its high concentration of sulfur-containing compounds such as allicin. • Ginger is another edible plant that helps strengthen your immune system. Ginger may help reduce sore throats and inflammatory diseases. • Spinach is included in the list of beneficial foods for the immune system not only because it is rich in vitamin C, but also because it is packed with antioxidants and beta-carotene, both of which increase our immune system's ability to fight infection. Similar to broccoli, spinach is healthiest when cooked as little as possible to preserve its nutrients. • Almonds are rich in vitamin E and healthy fats. Adults only need 15 milligrams (about half a cup) of vitamin E daily. • Sunflower seeds are rich in nutrients including phosphorus, magnesium, and vitamins B-6 and E. Due to its vitamin E content, it can help regulate and maintain your immune system's function. Of course, other foods such as avocado and dark leafy greens also contain high amounts of vitamin E. • Turmeric, this bitter and bright yellow spice, has been used for years as an anti-inflammatory in treating osteoarthritis and rheumatoid arthritis. Studies show that high concentrations of curcumin, which gives turmeric its yellow color, can help reduce exercise-induced muscle damage. • Green and black tea are both loaded with flavonoids (a type of antioxidant). Green tea is also a good source of the amino acid L-theanine, which helps produce germ-fighting compounds in your immune T-cells. • Kiwi is naturally rich in essential nutrients, including folate, potassium, vitamin K, and vitamin C. The vitamin C in kiwi helps your white blood cells prepare to fight infection. • Chicken and turkey meat are rich in vitamin B-6. This vitamin plays an important role in many chemical reactions occurring in the body and is considered vital for the formation of new, healthy red blood cells. • Broth made from boiling chicken bones contains gelatin, chondroitin, and other nutrients that are also beneficial for gut health and the immune system. • Choosing whole grains and lean proteins. • These foods provide the necessary energy for the immune system. • Fruits and vegetables are among the most important dietary components that provide the body with essential nutrients. This food group consists of various sources of minerals, vitamins, fiber, antioxidants, and water. • Vitamins A, C, K, and B6 are considered the best vitamins for strengthening the immune system, maintaining skin health, the digestive system, and nervous system function. • Consuming various proteins such as red meat, various types of white meat like chicken and fish, as well as eggs and dairy in the diet is very effective for strengthening the immune system against viruses. • Meat and dairy, in addition to having large amounts of protein, contain high levels of vitamins, iron, omega-3, and various amino acids needed to build essential body substances. Various grains and legumes also have a fiber called beta-glucan, which activates protective cells responsible for fighting germs and viruses. • Using spices in necessary amounts, not excessively, also helps disinfect the body and create cellular protection against germs and viruses. Below, we point out 10 important foods to strengthen the immune system: • Citrus fruits, red bell peppers, and broccoli • Garlic and ginger • Spinach • Yogurt • Sunflower seeds and various almonds • Turmeric • Green tea • Chicken and turkey • Oysters

• Keeping the body hydrated Drinking enough water and fluids is essential for maintaining the body's general health. • Regular exercise Physical activity and rest. 30 minutes of daily physical activity can help strengthen the immune system. • Getting enough sleep Having high-quality and sufficient sleep is vital for maintaining health and optimal immune system function. Sleep and the immune system are closely linked; to the extent that lack of quality and sufficient sleep has a significant impact on the onset of various diseases. As a result of studies conducted on 164 adults, those who slept less than 6 hours a night were more likely to catch a cold compared to those who slept 6 hours or more each night. During sleep, the individual's body has the opportunity to recover, regulate the immune system, and nourish cells. On the other hand, stress levels and the secretion of related hormones will stop during the day. • Stress management Reducing constant tension: Chronic stress can weaken the immune system, so it must be avoided using stress management techniques. • Avoiding smoking and alcohol Smoking and alcohol consumption weaken the immune system. • Avoiding unhealthy foods Avoiding excessive consumption of sweets, processed foods, and fried foods can lead to a weakened immune system.