Thursday, September 8, 2011

Chocolate and potatoes are good for you?!

I know - they probably weren't talking about potato chips.

This is from Dr Weil's Weekly Bulletin:

Chocolate and Your Heart
The latest news about chocolate is encouraging: an analysis of several studies involving data on more than 100,000 people suggested that those who reported eating chocolate regularly lowered their risk of heart disease by more than one-third. That may be cause for celebration among chocolaholics, but of course, there's a catch to it: the studies involved were all observational - that is, they all looked at chocolate consumption and health as reported by participants. The analysis didn't directly compare those who ate a set amount of chocolate per week with those who consumed a placebo (in this case, a chocolate look-alike and taste-alike), as would be required in a clinical trial to investigate chocolate's effects on the heart. What's more, the studies included reports of consuming chocolate in all its forms - dark, milk, in drinks, cookies and desserts. And it didn't specify how much chocolate study participants ate. Still, if the analysis has any merit, people who eat lots of chocolate regularly may find that they have healthier hearts than those who don't. The analysis, from England's University of Cambridge, was published August 29 in BMJ online.

My take? Chocolate is a source of polyphenols (the same type of antioxidants found in red wine). Stearic acid, the fat it contains, doesn't affect cholesterol levels, and studies have shown that flavonoids in dark chocolate help reduce the stickiness of platelets, cells that play an important role in blood clotting. As a result, blood takes longer to clot, reducing the danger of coronary artery blockages. Chocolate's polyphenols also appear to boost levels of HDL (the "good" cholesterol) and lower LDL (the "bad" cholesterol), at least in the lab. I recommend consuming good-quality dark chocolate that is at least 70 percent cocoa as a healthy snack, as long as you don't go overboard. An ounce or two a few times a week is good for you.

Eating Potatoes Can Help Lower Blood Pressure
Of course, the potatoes in question can't be French fries or chips or loaded with butter, cheese or all the other high calorie trimmings that sometimes come with spuds. But if you're partial to potatoes and enjoy eating them steamed or boiled, in moderation, they could be good for your blood pressure, even if you're already taking medication for hypertension. Researchers performing a small study (only 18 participants, mostly overweight or obese) at the University of Scranton reported the results of eating six to eight purple potatoes twice a day. After a month, average diastolic blood pressure (the bottom number) among the study group dropped 4.3 percent while average systolic pressure (the top number) fell 3.5 percent. Researcher Joe Vinson, Ph.D., noted that plain potatoes are not particularly fattening (a single one contains about 110 calories), and they're loaded with beneficial phytonutrients, which may be responsible for the blood-pressure lowering effect seen in his study. In a statement he noted that earlier research showed that potatoes contain a substance similar to ACE inhibitors, a group of blood pressure drugs.

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