How to increase Vitamin D
Vitamin D can be increased by eating eggs or fish, getting enough sunlight or taking vitamin supplements
Sunlight does not contain vitamin D. Your body already has vitamin D in a different chemical form. But sunlight is needed to activate this into active or useful Vitamin D.
Vitamin D levels are controlled by a hormone in your body called "Parathyroid Hormone". Your kidney is also involved in the manufacture of VItamin D. Disorders of both may affect your Vitamin D levels.
While it is always good to get some sunlight, vitamin D supplments do not need further activation by sunlight and can act directly as long as your kidney and liver are working correctly
1,25 dihydroxy VItamin D is the active form of Vitamin D also know as calcitriol is the active form of Vitamin D. All other forms are inactive.
Low ionized calcium levels, easy fractures on falls, painful bones are some of the signs of Vitamin D deficiency