Whole Grains Proven to Lower Cardiovascular Risk
It has long been thought that daily consumption of whole-grain foods such as bread could have a positive effect on the risk of cardiovascular disease but until now, no “comprehensive randomized and controlled intervention trial” – a more scientific and conclusive study – had been undertaken.
Finally, results of a new study of this type confirm that daily intake of three portions of whole-grain foods significantly reduce the risk of cardiovascular disease, at least in middle-aged people, and chiefly through the mechanism of lowering systolic blood pressure (the upper number in your blood pressure reading).
In fact, the study pegged the reduction in the risk of developing coronary artery disease at 15 percent and the risk reduction for stroke at 25 percent. After just four weeks on this diet, participants also showed improvements in other risk factors such as insulin sensitivity, cholesterol and internal inflammation. The effect was similar for both those getting three servings of whole wheat and for those getting the same servings of whole wheat and oats. The study was just released by the American Journal of Clinical Nutrition. Details are available now online at http://bit.ly/9Ztt9u.
The Magic 7 – Sleep & Cardiovascular Risk
A recent study shows that even among healthy people who regularly get five hours or less sleep a night have more than double the risk of developing cardiovascular disease. Also, people who regularly get nine or more hours of sleep a night have a greater than fifty percent increased risk of cardiovascular disease. Perhaps more surprising, people who get six or eight hours sleep also have a higher – but far less dramatic – increased risk of cardiovascular disease.
The study advised that seven hours sleep per night, not six or eight or anything more extreme, was the ideal regular sleep period for cardiovascular health.
But how could sleep period affect heart health?
The researchers suggested that shorter sleep times can cause “impaired glucose tolerance, reduced insulin sensitivity, increased sympathetic [nerve] activity and elevated blood pressure,” all of which increase the risk of hardening of the arteries.
Longer sleep duration may be related to an underlying sleep-related breathing disorder or poor sleep quality.
This study was published in the August 1, 2010 issue of the journal, Sleep. It is available online with a subscription to the journal or a membership the American Academy of Sleep Medicine.
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Resveratrol May Reduce the Risk of Diabetes
Wine may reduce the risk of diabetes.
Resveratrol – a compound found in wine, grapes and peanuts – has a positive effect on impaired glucose tolerance (IGT), also known as pre-diabetes.
A study found that resveratrol supplements taken at concentrations higher than those normally found in wine, grapes or peanuts, resulted in lower post-meal glucose levels and improved insulin sensitivity, which are both positive implications for those at risk of diabetes.
A separate study found that overweight and middle-aged individuals experienced a 40 percent improvement in insulin sensitivity. Both studies were presented at the June, 2010 annual meeting of the American Diabetes Association.