It is fatsoluble can dissolve in fats and oils and is found in fatty fish, egg yolks, and dairy products. 햇빛에 노출된 피부도 비타민 D를 생성할 수 있으며, 비타민 D가 부족하면 구루병이라는 뼈 질환을 일으킬 수 있습니다. It is being studied in the prevention and treatment of some types of cancer.