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Recently, another well done study of vitamin D and cancer resulted in disappointing results. Vitamin D supplements showed no benefit in persons with metastatic colorectal cancer (CRC). It did not result in a difference in overall survival outcomes. In the study, 455 patients with metastatic colorectal cancer were assigned randomly to either high daily vitamin ...continue reading "Another Vitamin D Study With Disappointing Results"

Another disappointing result for Vitamin D supplements. A large study, with school-aged children randomly assigned to either a vitamin D supplement group or no supplement, found that vitamin D supplementation had no effect on the number of fractures that occurred in the children. Vitamin D3 supplementation did not prevent fractures or have an effect on ...continue reading "Study Found Vitamin D Supplements Do Not Prevent Fractures In Children"

The results from well done studies on vitamin D supplements have frequently been disappointing due to lack of health benefits. However, a recent study found that the risk of melanoma (a skin cancer) was significantly reduced in persons taking vitamin D supplements. The Univ. of Eastern Finland researchers also found no link between vitamin D ...continue reading "Study Finds Vitamin D Supplements are Linked to Lower Risk of Melanoma"

More studies are finding that supplementing with vitamin D is not living up to its original promise - that is, as a supplement that can prevent or treat all sorts of health conditions. Two recent large studies found that daily vitamin D supplementation in persons with or without a vitamin D deficiency didn't reduce the ...continue reading "Two Studies Find Vitamin D Doesn’t Prevent COVID"

For years it has been generally accepted that vitamin D3 is superior to vitamin D2 when taken as a supplement. Another recent study confirms that they are not equivalent in their effects in the human body, and that vitamin D3 is far superior. Vitamin D2 (ergocalciferol) is plant and fungus-derived, and vitamin D3 (cholecalciferol) is ...continue reading "All Vitamin D Supplements Are Not The Same"

Yesterday's post was about how several well-done large studies did not find the health benefits from vitamin D supplements that the researchers had hoped for. In one of the studies (the VITAL trial) discussed yesterday, Vitamin D supplements did not prevent cancer or cardiovascular events (e.g., stroke, heart attack), which was the focus of the ...continue reading "Vitamin D Supplements and Autoimmune Disease"

Several recent articles on Medscape (a site for medical professionals) highlight the debate over vitamin D. The question: Does daily vitamin D supplementation have positive health benefits or not? Everyone agrees that if there is an actual deficiency, then it has positive health effects. But how about the average person with levels above the deficiency ...continue reading "Some Large Studies Find No Benefit From Vitamin D Supplements"

Many people complain of frequent colds and upper respiratory infections. Perhaps even every month. This is an especially big problem for those suffering from chronic sinusitis, because every cold and sore throat also leads to a sinus infection. So a goal is to try to reduce the number of infections, and daily vitamin D supplements ...continue reading "Fewer Respiratory Infections With Vitamin D Supplements"

Pregnancy is a time when one should try to eat as well as possible, especially for the health of the developing baby. Included in this is the baby's brain development and later intellectual functioning (neurocognitive development). A recent study found that a mother's vitamin D levels during pregnancy are associated with the IQ of the ...continue reading "Vitamin D Levels During Pregnancy Associated With A Child’s IQ"

Several studies are now suggesting that low vitamin D levels are linked to increased risk of getting COVID-19. And if you get COVID-19, low vitamin D levels are linked to a higher risk of developing serious symptoms requiring admission to intensive care,  and also not surviving. These studies are observational and don't prove that vitamin ...continue reading "Vitamin D and COVID-19"