Latest Research

Does low vitamin D status contribute to reduced male fertility?

  • A study published by the journal Reproductive Biology and Endocrinology found that vitamin D status is linked with male reproductive success in couples attempting pregnancy.

Study finds high dose vitamin D supplementation significantly improves irritable bowel syndrome

  • A randomized controlled trial discovered that 50,000 IU of vitamin D3 taken bimonthly for six months improved IBS symptoms.

Clinical study finds correction of vitamin D deficiency may benefit patients with common type of vertigo

  • A recent clinical trial suggests that vitamin D supplementation may help patients manage benign paroxysmal positional vertigo (BPPV).

Too Little Sunshine Can Take A Toll On Your Health, Too

  • Dr. Reinhold Vieth discuses a study that discovered avoiding sun exposure may increase the risk for all-cause mortality in women.

Healthy vitamin D levels associated with significant decrease in cancer risk among women

  • A pooled analysis of a randomized trial and prospective cohort study determined that women with vitamin D levels of at least 40 ng/ml were associated with > 65% reduced risk of developing cancer.

Is vitamin D an effective antidepressant?

  • A recent Iranian paper confirmed that vitamin D is an effective antidepressant.


Vitamin D may be associated with the survival of breast cancer patients

  • Researchers recently found vitamin D is significantly associated with the survival of breast cancer patients.


Closer look: low vitamin D status may increase risk of dementia

  • Dr. Cannell evaluates the study that found low vitamin D levels may lead greater cognitive decline in older adults.


Mendelian randomization: Genetically low vitamin D levels linked to multiple sclerosis

  • Researchers recently evaluated how genes that influence vitamin D status relate to the risk of multiple sclerosis.


Mendelian randomization: Genetically low vitamin D levels are related to increased mortality

  • A new study published in British Medical Journal used Mendelian randomization to discover that genetically low vitamin D levels were related to increased all-cause mortality, cancer mortality, and other mortality, but not cardiovascular mortality.


New study finds low vitamin D levels increase the risk of developing dementia

  • A new study published in the journal Neurology found that in participants without dementia, low vitamin D levels increased the risk of developing Alzheimer’s disease and other forms of dementia.


Is the Food and Nutrition Board’s recommended daily allowance for vitamin D flawed?

  • In 2011 the Food and Nutrition Board (FNB) may have used flawed statistics to recommend a RDA for vitamin D of 600 IU/day for most adults.


Does supplementation during both late pregnancy and early infancy influence the risk of respiratory infections?

  • In an interesting new analysis, researchers have found that vitamin D supplementation in pregnant mothers and subsequently in their newborn infants, together, may reduce the risk of developing acute respiratory infections.