High vitamin C linked to lower BP in young women

By Joene Hendry

NEW YORK (Reuters Health) - A study in young adult women links high blood levels of vitamin C with lower blood pressure.

This “strongly suggests that vitamin C is specifically important in maintaining a healthy blood pressure,” lead author Dr. Gladys Block, of the University of California, Berkeley, told Reuters Health.

Previous research linked high plasma levels of vitamin C with lower blood pressure among middle-age and older adults, typically those with higher than optimal blood pressure readings, Block and colleagues report in the Nutrition Journal.

The current study involved 242 black and white women, between 18 and 21 years old, with normal blood pressures, who were participants in the National Heart, Lung and Blood Institute Growth and Health Study. The girls had entered the trial when they were 8 to 11 years old. Over a 10-year period, their plasma levels of ascorbic acid (vitamin C) and blood pressure were monitored.

At year 10, Block and her colleagues found that blood pressure, both the systolic and diastolic (top and bottom reading), was inversely associated with ascorbic acid levels.

Specifically, women with the highest levels of ascorbic acid had a decline of about 4.66 mm Hg in systolic and 6.04 mm Hg in diastolic blood pressure compared with women with the lowest ascorbic acid levels. This difference still held true after researchers allowed for differences in body mass, race, education levels, and dietary fat and sodium intake.

Women with the lowest levels of plasma ascorbic acid likely consumed average amounts of fruits, vegetables, and fortified foods while those with the highest plasma ascorbic acid levels likely ate diets rich in fruits and vegetables or took multivitamins or vitamin C supplements, the researchers note.

Further analyses of vitamin C and blood pressure changes over the previous year, “also strongly suggested that the people with the highest blood level of vitamin C had the least increase in blood pressure,” Block said.

Since these findings infer a possible association between vitamin C and blood pressure in healthy young adults, Block and colleagues call for further investigations in this population.

SOURCE: Nutrition Journal, December 17, 2008

Source

--------------------------------------------------------------------------------------------
Related Posts:


NEW YORK (Reuters Health) - Lower blood levels of 25-hydroxyvitamin D, a protein that provides an acquire measure of vitamin D in the blood, are independently associated with an increased risk of developing high blood pressure, according to findings published in Hypertension. Studies have shown 25(OH)D levels and skin exposure to UVB radiation…are associated with lower

Full Post: Low vitamin D linked with high blood pressure
--------------------------------------------------------------------------------------------

NEW YORK (Reuters Health) - In the large Women’s Antioxidant Cardiovascular Study, participants who took beta carotene, vitamin C, vitamin E, or a combination of supplements had no significant reductions in their risk of cancer. The clinical trial, which involved 7,627 women who were followed for an average of 9.4 years, was conducted by Dr. Jennifer

Full Post: No cancer risk reductions seen with antioxidants
--------------------------------------------------------------------------------------------

By Will Dunham WASHINGTON (Reuters) - The number of Americans with high blood pressure is on the rise thanks in large part to growing rates of obesity, researchers said on Tuesday. But increasing numbers of those with high blood pressure, also called hypertension, are getting the condition treated, researchers from the U.S. government’s National Institutes of Health

Full Post: More Americans getting high blood pressure: study
--------------------------------------------------------------------------------------------

NEW YORK (Reuters Health) - A single high dose of vitamin D given every four weeks is as safe as smaller daily or weekly doses, and is as effective in achieving adequate circulating levels of the vitamin, according to a study conducted in Israel. To prevent fractures in older patients, the level of the active metabolite

Full Post: Monthly vitamin D supplement safe and effective
--------------------------------------------------------------------------------------------

By Will Dunham WASHINGTON (Reuters) - Beta carotene, vitamin C and vitamin E supplements taken for years failed to lower overall cancer risk in the latest study to cast doubt on the possibility that such dietary supplements can prevent cancer. The findings, published on Tuesday in the Journal of the National Cancer Institute, followed two other important

Full Post: Antioxidants fail again in cancer prevention study

Site Navigation

Most Read

Search