8 doctors weighed in:

What could be causing low vitamin d even with normal calcium levels?

8 doctors weighed in
Dr. Susan Wingo
Internal Medicine - Endocrinology
4 doctors agree

In brief: Too little intake

The body maintains stores of vitamin d in the fat cells.
It takes a long time for a deficiency to develop, and a long time to correct it using typical over-the-counter supplements. People normally get vitamin d from sun exposure and a few food sources (liver, eggs) as people have moved indoors and don't eat as much eggs & liver, vitamin d deficiency has become more common.

In brief: Too little intake

The body maintains stores of vitamin d in the fat cells.
It takes a long time for a deficiency to develop, and a long time to correct it using typical over-the-counter supplements. People normally get vitamin d from sun exposure and a few food sources (liver, eggs) as people have moved indoors and don't eat as much eggs & liver, vitamin d deficiency has become more common.
Dr. Susan Wingo
Dr. Susan Wingo
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2 comments
Dr. Kathleen Cullen
Vitamin D is found naturally in salmon, tuna , and shitake mushrooms.. Because it is stored in fat cells, obese people are at risk for deficiency because it 's not released in the blood and they tend to have lower levels. Darker skinned people are also at risk since they have a natural suncreen...pigmented skin. Most people need to take 2-5,000 units daily to get optimal blood levels of 50-70.
Dr. Tracy Berg
ok to get your blood level checked every 6 months until you get your level to 50.
Dr. Melissa Young
Internal Medicine - Endocrinology
1 doctor agrees

In brief: Diet, malabsorption

Vitamin d deficiency rarely causes low calcium because if you can't absorb calcium from food (bec of low d), your body takes it out of the bones.
Low d is usually due to lack of intake, but people with GI problems may have trouble absorbing it.

In brief: Diet, malabsorption

Vitamin d deficiency rarely causes low calcium because if you can't absorb calcium from food (bec of low d), your body takes it out of the bones.
Low d is usually due to lack of intake, but people with GI problems may have trouble absorbing it.
Dr. Melissa Young
Dr. Melissa Young
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Dr. Moinuddin Mokhashi
Pediatrics - Endocrinology
1 doctor agrees

In brief: Usually poor diet

Nutritional causes are the commonest reason for vit d deficiency and then inadequate sunlight exposure.
Only in severely low vit d levels can calcium levels drop.

In brief: Usually poor diet

Nutritional causes are the commonest reason for vit d deficiency and then inadequate sunlight exposure.
Only in severely low vit d levels can calcium levels drop.
Dr. Moinuddin Mokhashi
Dr. Moinuddin Mokhashi
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