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The Heart Scan Blog: Weight loss and vitamin D

The Heart Scan Blog: Weight loss and vitamin D

Weight loss and vitamin D

At the start of her program, Penny's 25-hydroxy vitamin D blood level showed the usual deficiency at 22 ng/ml.

She supplemented with 8000 units of vitamin D. Another 25-hydroxy vitamin D blood level several months later showed a level of 67.8 ng/ml, right on target.

But Penny also began our diet, including the elimination of wheat, cornstarch, and sugars, and, over 6 months, lost 34 lbs.

Now a much trimmer 146 lbs (still more to go!), another vitamin D blood level: 111 ng/ml.

Penny's weight loss means that the vitamin D is distributed in a smaller total volume, particularly a lower volume of fat.

This is a common phenomenon with substantial weight loss: lose weight and the need for vitamin D is reduced. The reduction in dose is roughly proportion to the weight lost. Vitamin D should therefore be reassessed with any substantial change in weight of, say, 10 lbs or more, either up or down, because of the influence of fat on vitamin D blood levels.

Some references on this effect:

Men and women over age 65:
Adiposity in relation to vitamin D status and parathyroid hormone levels: a population-based study in older men and women.

Obese women:
Low 25-hydroxyvitamin D concentrations in obese women: their clinical significance and relationship with anthropometric and body composition variables

Obese children:
Hypovitaminosis D in obese children and adolescents: relationship with adiposity, insulin sensitivity, ethnicity, and season.

African-Americans:
Relationship of vitamin D and parathyroid hormone to obesity and body composition in African Americans.

Although the bulk of the effect is most likely due to sequestration by fatty tissue, perhaps less sun exposure in obese people also contributes:
Body mass index determines sunbathing habits: implications on vitamin D levels.

Comments

Brate said…
Isn’t it natural for us to believe we are healthy and not suffering from any disease? I had a similar thought process until my physician asked me to get a heart scan done after he found that my basic cardiograms were not perfect. I discovered that there were calcium deposits in my coronary arteries and I was at a serious risk of a heart attack. I was shocked and went ahead with the Cardiologist's suggestion of an advanced diagnostic scan. Though it’s always tough to undergo such experiences, I was not at any kind of discomfort at the Elitehealth.com advanced heart scan facility. I am not an expert in medical appliance and machines but could feel that the equipment was world-class and I was in safe hands. That feeling is really very important for me and that’s how it actually went on. The facilities for Full Body Scan were as good as they can get.

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