Vegetables, cereals, their products and fruits usually contain little or no vitamin D, while animal food is the main source of natural vitamin D.

For example, high-fat marine fish and fish eggs, animal liver, egg yolk, cream and cheese contain relatively more vitamin D, while lean meat, milk and nuts contain trace amounts of vitamin D..

Common foods rich in vitamin D are (international unit/100g).

Canned salmon and red trout 500.

Cream (fat content 31.3%) 50

Canned tuna (oil immersion) 232

Eggs (fried, boiled and poached) 49

Stewed chicken liver 67? Roasted lamb liver 23

D(vitamin D, a sterol derivative, has anti-rickets effect, also known as anti-rickets vitamin.

At present, it is considered that vitamin D is also a steroid hormone, and the most important members of vitamin D family are VD2 (ergocalciferol) and VD3 (cholecalciferol). Vitamin D is the derivative of different provitamin D after ultraviolet irradiation. Plants do not contain vitamin D, but provitamin exists in both animals and plants.

Vitamin D is a fat-soluble vitamin with five compounds, among which vitamin D2 and vitamin D3 are closely related to health. They have the following three characteristics: it exists in some natural foods; 7- dehydrocholesterol produced from cholesterol is stored under the skin of human body, which can be transformed into vitamin D3 after being irradiated by ultraviolet rays. Proper sunbathing is enough to meet the human body's needs for vitamin D.

References:

Vitamin D_ Baidu encyclopedia