Word: cardiovascular
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...EXERCISE need not be pulse pounding to be beneficial, say experts. A little gardening or strenuous housework isn't a bad prescription for cardiovascular health...
...which started out as a good thing to eat and then became a bad thing, now turns out to be a collection of very different things, some good, some bad, some absolutely neutral. It's a pattern that has been repeated for a variety of cardiovascular risk factors. It's not pretty; the tortuous progress of scientific discovery rarely...
Researchers realized decades ago that high blood pressure is a cardiovascular danger signal. They don't understand the exact mechanism yet, but physicians think elevated pressure puts a strain on blood vessels, causing them to tear or develop weak areas where plaque can gain an easy foothold. Hypertension (to use the technical term) can also force small blood vessels to burst like an overstressed garden hose; if that happens in the brain, it's called a stroke--the other major cardiovascular killer besides heart attack...
Another factor, doctors believe, is that exercise holds down blood pressure. When the heart pumps blood more quickly through the body, vessels dilate--or widen--to accommodate the extra flow. The overall effect is to lower pressure throughout the cardiovascular system. People who get regular exercise have about a 30% lower risk of developing heart-threatening hypertension than people...
That doesn't mean, however, that popping vitamin E pills will stave off heart disease. Previous research had reached a split decision over whether supplementary E could guard against cardiovascular problems. But the study on postmenopausal women, one of the largest yet, concluded that the vitamin was protective only when eaten in foods; in pill form, it didn't seem to do much good at all. This result could mean that the vitamin works in tandem with some other, as yet unidentified, food-borne substance...