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Vitamin D3 May be More Effective Than D2 For Fighting Vitamin D Deficiency

Vitamin D comes in two supplement forms - D2 and D3. Researchers have debated for a long time about whether or not the two are equivalent when it comes to raising vitamin D levels and combatting vitamin D deficiency but a recent study suggests that vitamin D3 may in fact be more effective than vitamin D2.

The study took place at a high altitude during the winter with 107 healthy adults. Over the course of eight weeks, 19 of them took a placebo, 42 took 50 mcg/day
vitamin D3, and 46 took 50 mcg/day vitamin D2 daily.

The researchers collected blood samples at the beginning of the study, at four weeks, and again at eight weeks.

At the conclusion of the study, they found that vitamin D3 blood levels had risen in the D3 group from 41.5 nmol/L to 88 nmol/L. Vitamin D2 levels in the D2 group rose as well, but more notable was the fact that D3 levels in that group dropped from 36.4 +/- 13.3 nmol/L to 16.6+/-6.3 nmol/L.

The placebo group showed decreases across the board.

The researchers determined that vitamin D3 is more effective at raising overall blood levels of vitamin D and that vitamin D2 may actually lower levels by decreasing D3 concentrations.

Researchers from the University of Bergen in Norway conducted the study. It was published online ahead of print on September 3, 2013, in the Journal of Clinical Endocrinology and Metabolism.

Previous studies have shown vitamin D to be associated with improved kidney health, reductions in the risk of skin cancer, reducing the risk of osteoporosis,combating diabetes, and improving age related eye degeneration.

Vitamin D can be found in milk, fortified cereals, fish, and eggs. Your body also processes vitamin D from the sun but it becomes harder for our bodies to process it as we age. A high quality vitamin D supplement is always a good option if you feel that you’re not getting enough through diet and sun.

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