1. Egg yolk. Egg yolk is rich in vitamin D and B vitamins, and its protein content accounts for almost half of the entire egg. Contrary to popular belief, the cholesterol in an egg a day does not increase the risk of heart disease. ?

2. Dried mushrooms. Dried shiitake mushrooms are rich in various nutrients, especially vitamin D. The content is 8 times that of fresh shiitake mushrooms, because the sun-drying process can increase the vitamin D content. In addition, dried shiitake mushrooms also have anti-viral, anti-cancer, and cholesterol-lowering effects. ?

3. Mushrooms treated with natural light. Mushrooms contain ergosterol, a plant sterol that is converted into vitamin D when exposed to natural light or ultraviolet radiation. While mushrooms are typically grown in dimly lit environments, many farmers are now irradiating mushrooms with ultraviolet light to increase their vitamin D content.

4. Sardines. Sardines are not only high in vitamin D, but also rich in omega-3 fatty acids and low in mercury. ?

5. Tuna. Fatty tuna is rich in vitamin D and omega-3 fatty acids, can provide rich protein, and is also rich in selenium, which can enhance human immunity. ?

6. Wild salmon. Wild salmon has 75% more vitamin D than farmed salmon and provides large amounts of omega-3 fatty acids and B vitamins. Different cooking methods can have different effects on vitamin D. Studies have found that baking maximizes vitamin D retention, while frying in oil reduces vitamin D by half.

People's Daily Online - Seven foods rich in vitamin D