What should the elderly with weak immunity eat?

　　1. Lipid fish

　　Fish contains large amounts of Omega-3 fatty acids. These include salmon and tuna. This fatty acid can fight disease , helps reduce the amount of fat in the blood, and can also prevent blood clotting related to heart disease.

　　The American Heart Association recommends eating fish at least twice a week and no less than two servings each time (especially fatty fish). "Eating fish may reduce the risk of cardiovascular disease," Lichtenstein said. ”

　　Another benefit of eating salmon and tuna is that you will get less saturated fat from high-fat foods.

　　Usually at home, you can cook some salmon or tuna, grill or boil it, it will be a delicious meal.

　　2. Raspberry

　　According to research by the United States Department of Agriculture, blueberries are the fruit with the highest antioxidant content, followed by cranberries, followed by blackberries and strawberries. The color of berries comes from the pigments anthocyanins, antioxidants that neutralize free radicals. Such free radicals can cause chronic diseases such as cancer , heart disease, etc. Berries, especially cranberries, can also prevent urinary tract infections.

　　A cup of berries a day is a good idea. You can eat it as a snack, on top of yogurt, mixed with waffles or salads or smoothies.

　　3. Vegetable foods

　　Among disease-fighting foods, vegetables are also the best. These vegetables include spinach, kale, bok choy and lettuce. They all contain large amounts of vitamins, minerals, beta-carotene, vitamin C, folic acid, iron, magnesium, carotenoids, phytochemicals, and antioxidants. A Harvard study found that eating foods high in magnesium, such as spinach, can reduce the likelihood of type 2 diabetes.

　　Next time you make a salad, you can add some of these vegetables, including super nutritious spinach and other greens. Such foods can help you fight disease.

　　4. Whole grain foods

　　In the morning, grandma usually urges us to eat some oatmeal, but does she know that the soluble fiber in oatmeal can lower blood cholesterol levels?

　　Whole grains contain nutrients extracted from refined grains. These ingredients contain folic acid, selenium, vitamin B, etc. which are good for the heart healthy elements. These elements can also control your weight and reduce the risk of diabetes. The fiber content keeps you from feeling hungry between meals while also improving your digestion.