Vitamin D deficiency ‘ups risk of heart disease, stroke in black teens’
July 30th, 2010 - 2:43 pm ICT by ANIWashington, July 30 (ANI): Vitamin D deficiency is associated with arterial stiffness, a risk factor for heart disease and stroke, in black teens, a new study has found.
“While we think of the sun as providing humans with most of our body’s requirement of vitamin D, 95 percent of the 44 black teenagers living in sunny Georgia who took part in this study were classified as vitamin D deficient,” said Yanbin Dong, MD, PhD, of the Medical College of Georgia in Augusta and lead author of the study.
“Our study shows that vitamin D supplementation may improve cardiovascular health in black teens who don’t get enough vitamin D from their diet and sun exposure.”
In this study, 44 black teenagers (male and female) were randomly assigned to receive either 400 IU of vitamin D per day as recommended by the American Academy of Pediatrics or 2,000 IU of vitamin D per day.
Study subjects taking 400 IU of vitamin D per day did not achieve vitamin D sufficiency, while their peers who took 2,000 IU of vitamin D per day on average became vitamin D sufficient.
Researchers measured arterial stiffness in study subjects using pulse wave velocity (PWV), a non-invasive procedure where a pulse is emitted at two arterial sites.
Results from the study showed that vitamin D may protect vascular systems and that sufficient supplementation of vitamin D could elicit favorable alterations in the arterial system and in cardiovascular function in general.
“Our study is the first clinical trial of vitamin D intervention to use 2,000 IU in black subjects and to include cardiovascular risk factors as outcomes in youth,” said Dong.
“Our study indicates that the current recommendations for vitamin D intake in black teenagers may need to be revised upward.”
The study has been published in The Endocrine Society’s www.endo-society.org (JCEM). (ANI)
- Vitamin D levels linked with health of blood vessels - Apr 04, 2011
- Vitamin D deficiency linked to high BP, stiffer arteries - Apr 04, 2011
- Vitamin D deficiency linked to stiff arteries - Apr 04, 2011
- Vitamin D supplement won't help in short term - Sep 05, 2012
- Ray of sunshine boon for critically ill - Apr 04, 2012
- A vitamin that helps the critically ill (Lead) - Apr 04, 2012
- Vitamin D responsible for difference in blood pressure between 'Blacks' and - Apr 27, 2011
- Vitamin D protects against viral infections - May 01, 2012
- High vitamin D levels may not reduce frailty risk in older women - Dec 09, 2010
- Vitamin D supplements can prevent preterm labor/births - May 01, 2010
- Vitamin D supplements can prevent premature births - May 01, 2010
- Vitamin D safe for healthy pregnant women - Jun 29, 2011
- More than 50pc people globally get insufficient Vitamin D - Jul 16, 2010
- Higher vitamin D intake needed to cut cancer risk - Feb 23, 2011
- Obese adolescents benefit from high-dose vitamin D - Nov 02, 2011
Tags: academy of pediatrics, american academy of pediatrics, arterial stiffness, arterial system, black teens, cardiovascular function, cardiovascular health, cardiovascular risk factors, endo, endocrine society, invasive procedure, md phd, medical college of georgia, pulse wave velocity, risk factor, risk of heart disease, study subjects, sun exposure, vascular systems, vitamin d deficiency