One-third of populations worldwide may have low levels of vitamin D, claim Dr. Kristina Hoffmann of the Mannheim Institute of Public Health (MIPH), Medical Faculty Mannheim, Heidelberg University.
According to her, the strength of their study is that they used strict inclusion criteria to filter and compare data, using consistent values for 25(OH)D. Dr. Hoffmann and he team found a high degree of variability between reports of vitamin D status at the population level, more than one-third of the studies reviewed reported mean serum 25(OH)D values below 50 nmol/l. The new systematic review used continuous values for 25(OH)D to improve comparisons.
Vitamin D is a steroid vitamin, a group of fat-soluble prohormones, which help in absorption and metabolism of calcium and phosphorous. A study at the University of Minnesota found that Vitamin D levels in the body at the start of a low-calorie diet predict weight loss success. Moreover, researchers from Boston University School of Medicine found that higher vitamin D levels help avert illnesses, including cancer, autoimmune disease, cardiovascular disease and infectious diseases.
The result has been published in the British Journal of Nutrition.
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