What are the roles and functions of vitamin D3?

Aug 24, 2022 Source: Cainiu Health
Disease description:

When I visited my friend's home, I noticed a medication called vitamin D3 on her table, which she has been taking regularly. I would like to inquire about the effects and functions of vitamin D3.

Doctor's answer (1)
Dr. Wang Lei
Vitamin D promotes the absorption of calcium and phosphorus in the human body. A deficiency in vitamin D3 can result from inadequate sunlight exposure and may lead to chronic gastrointestinal disorders, liver and kidney diseases, among other conditions. Insufficient sunlight can cause vitamin D3 deficiency, which also affects mood; many people may experience low mood or even develop depression.