The major natural source of the vitamin is synthesis of cholecalciferol in the lower.
Sunlight vitamin d sources.
Meanwhile adults over 70 should aim for at least.
Vitamin d sources include the sun certain foods and vitamin d supplements.
Vitamin d is a group of fat soluble secosteroids responsible for increasing intestinal absorption of calcium magnesium and phosphate and multiple other biological effects.
Find out how to get enough without risking sun damage.
Regular sun exposure is the most natural way to get enough vitamin d but too much sunlight comes with health risks.
This article explains how to safely get vitamin d from the sun.
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 essential for healthy bones.
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.
The challenge lies is balancing skin protection from sun overexposure while reaping vitamin d s.
In the uk we get most of our vitamin d from sunlight exposure from around late march early april to the end of september.