05 March 2012
Daily supplementation of vitamin D3 may decrease the risk of cardiovascular diseases by improving the lipid profile of the blood and reducing the body fat mass in overweight and obese women, suggests a new Iranian study.
In the randomized controlled trial, 77 overweight and obese women with an average age of 38 were randomly assigned to receive either a daily vitamin D3 dose of 1,000 International Units (25 micrograms) or placebo for 12 weeks (1). An analysis of blood samples showed that HDL - cholesterol levels increased in the vitamin D group, but decreased in the placebo group. Total LDL - cholesterol concentrations were high in both groups, but in the vitamin group, LDL-cholesterol particles have less atherosclerosis promoting properties. In addition, vitamin D supple-mentation was associated with a significant reduction in body fat mass, compared with placebo.
Past studies have found high rates of vitamin D deficiency in obese populations and have linked low vitamin D levels to cardiovascular disease and type 2 diabetes (2). However, the mechanisms by which obesity and its related illnesses are connected to vitamin D deficiency are not fully known.
15 December 2012
Recently published systematic reviews and meta-analyses reported that eating at least two servings of fatty fish a week was associated with a reduced risk of cardiovascular disease (CVD) events while fish oil supplements did not show the same effect.
1 December 2012
Beta-carotene is an important dietary source of vitamin A for humans. However, the bioavailability and vitamin A equivalency of beta-carotene are highly variable and can be affected by food- and diet-related factors as well as characteristics of the population, such as nutrient deficiencies and genetic variations associated with beta-carotene metabolism.
18 March 2013
According to a new study, more than half of six to twelve-year-olds in Germany are not receiving the recommended intake of iodine.
