All are low in salt. Even more important, researchers find that people who eat more vegetables are healthier. So far, researchers only have clues. That doesn't mean beta-carotene is the protector. Researchers now think that beta-carotene could simply be a marker for other phytochemicals that often accompany it.
Stroke is less common among vegetable-eaters, possible because of the vegetables' potassium .
That's fine advice. The fiber numbers were published in October 1996 by the U.S. Department of Agriculture. Certainly, it's too early to say which, if any, protect against cancer, blindness, or other illness. And if, say, lycopene and not the others turns out to be protective, a score that includes the other four may give a false reading of vegetable's value. Nevertheless, we chose the uncertainty and imprecision of a carotenoid measure because carotenoids are more likely than vitamin A to prevent diseases like cancer.