Vitamin D is best absorbed when taken with a meal, so plan to take your supplements with food.
Having dark skin. Being born to a mother who had a vitamin D deficiency during pregnancy. Living in a northern latitude or an area where there is less sunshine. Being born prematurely. Taking a medication that interferes with your body’s ability to absorb vitamin D, such as an anti-seizure or antiretroviral medication. Receiving breast milk only as an infant.
The type of surgery you or your child might need depends on you or your child’s medical history and particular case.