Egg Yolk
Whole eggs are a great source of vitamin D and many other nutrients. The white part mostly contains protein, whereas the yolk is loaded with many minerals, vitamins, and fat. On average, there are around 35 IU of vitamin D in an egg, which meets nearly 5 percent of the daily recommended intake. The levels of vitamin D in egg yolk can vary, depending on the vitamin D contents and sun exposure of chicken feed. With the same feed, eggs from pasture-raised chickens in outside areas tend to have much higher levels. [7]
