The major natural source of the vitamin is synthesis of cholecalciferol in the lower.
Sunlight vitamin d sources.
Vitamin d is essential for healthy bones.
In the midst of summer there s plenty of daily sunlight to boost vitamin d levels in your body.
In the uk we get most of our vitamin d from sunlight exposure from around late march early april to the end of september.
Find out how to get enough without risking sun damage.
Vitamin d sources include the sun certain foods and vitamin d supplements.
Regular sun exposure is the most natural way to get enough vitamin d but too much sunlight comes with health risks.
The challenge lies is balancing skin protection from sun overexposure while reaping vitamin d s.
In the united states the recommended daily intake of vitamin d from food or supplements is as follow.
In humans the most important compounds in this group are vitamin d 3 also known as cholecalciferol and vitamin d 2 ergocalciferol.
Vitamin d is a group of fat soluble secosteroids responsible for increasing intestinal absorption of calcium magnesium and phosphate and multiple other biological effects.
Children and adults aged 1 70 need approximately 600 iu of vitamin d per day and it can come from a combination of food sources and sunlight.