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Grapes - Could eating grapes help fight high blood pressure related to a salty
diet? And could grapes calm other factors that are also related to heart diseases such as heart
failure? A new University of Michigan Cardiovascular Centre study suggests so.
The new study, published in the October issue of the Journal of Gerontology: Biological Sciences, gives tantalizing clues to the potential of grapes in reducing cardiovascular risk. The effect is thought to be due to the high level of phytochemicals - naturally occurring antioxidants - that grapes contain.
The study was performed in laboratory rats. The researchers noted while these study results are extremely encouraging, more research needs to be done.
"Though it's true that your mom told you to eat all your fruits and your
vegetables, and that we are learning a lot about what fruits, including grapes, can do in this particular model of
hypertension and heart failure, we would not directly tell patients to throw all their pills away and just eat grapes," says Bolling.
In the meantime, Bolling says, people who want to lower their blood pressure, reduce the risk of heart
failure, or help their weakened hearts retain as much pumping power as possible should follow tried-and-true advice:
Cut down on the amount of salt you get through your food and drink.
"There is, as we now know, a great variability, perhaps genetic even, in sensitivity to salt and causing hypertension," he says. "Some people are very sensitive to salt intake, some are only moderately so, and there are perhaps some people who are salt resistant. But in general we say stay away from excess salt."
He notes that the popular DASH diet, which is low in salt and high in fruits and
vegetables, has been proven to reduce mild high blood pressure without medication. The dose of whole table grape powder that was consumed in the study was roughly equivalent to a person eating nine human-sized servings of grapes a day. Currently, five to nine servings of fruits and vegetables are recommended as part of the DASH diet.
Reference: Journal of Gerontology: Biological Sciences, 2008, Vol. 63A, No. 10, October 2008
Sleep - People with even minimally symptomatic obstructive sleep apnea (OSA) may be at increased risk for cardiovascular disease because of impaired endothelial function and increased arterial stiffness, according to a study from the
Oxford Centre for Respiratory Medicine.
"It was previously known that people with OSA severe enough to affect their daytime alertness and manifest in other ways are at increased risk of cardiovascular disease, but this finding suggests that many more people—some of whom may be completely unaware that they even have OSA—are at risk than previously thought," said lead author of the study, Malcolm Kohler, M.D.
Over 50% of People With High Blood Pressure Unaware They Have Condition
More than half of people diagnosed with high blood pressure do not have it under control and many more go undiagnosed, according to research carried out at the University of Warwick.
Professor Franco Cappuccio from Warwick Medical School at the University of Warwick led the only UK team to participate in a European study examining awareness, treatment and control of high blood pressure, or hypertension. Hypertension is an important cause of serious diseases such as heart attacks and strokes.
The IMMIDIET study is published in the Journal of Hypertension. 12 Nov 08
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