28 April 2014
According to a new US study a low dietary vitamin D intake in mid-life seems to be linked to a higher total mortality among hypertensive subjects.
The cohort study used food questionnaires to estimate the intakes of vitamin D of 8006 Japanese American men aged 45 to 68 and documented cases of death during 45 years (1). The study results showed that among participants with hypertension those with the highest vitamin D intakes were significantly less likely
to die than those with the lowest intakes.
The researchers commented that vitamin D may have heart protective effects which support health in gene- ral. They noted that the used calculations of nutrient intake were crude estimates of vitamin D status based on food questionnaires. As people in general are not very good at recording what and how much they eat, vitamin concentrations in blood, tissue or urine are the most accurate reflection of the nutritional status. An earlier meta-analysis of 12 studies reported a 20 nmol/L increase in blood serum vitamin D3 concentrations was associated with an 8% decrease in all-cause mortality (2).
31 March 2017
Advances in human genome sequencing has opened the door to personalized medicine and nutrigenetics, which use information about genetics to guide medical therapy or nutritional advice.
14 December 2011
A new UK study suggests that supplementation with vitamin D or calcium may have no impact on the chances of dying from cancer or vascular disease among seniors with a high risk of bone fractures. The researchers concede, however, that the study has weaknesses.
6 February 2012
Healthy brain development in adults seems to depend on having good iron levels in teenage years, a new US study suggests.
