Let's try to find out why getting fiber from whole foods is important for a healthy diet.

Fiber has never been【67】you'd call a healthy nutrient. Suddenly, it's a superstar: Manufacturers are【68】it to yogurt, juice, even【69】sweetener.

But as with many【70】, there's an unseemly back story: Experts aren't sure that these fiber-boosted foods are【71】trying.

Yes, you should eat lots of fiber. There's no question that a diet【72】in high-fiber foods is a powerful lifesaver-it's known to【73】the risk of heart disease and diabetes, and it helps【74】weight gain. Recent studies show a fiber-rich cuts the risk of breast cancer, too, and the【75】you'll develop cancer of the small intestine. But the new foods might not【76】That's【77】many of them use "isolated" fiber-stuff that's been【78】out of the foods that【79】contained it, says nutrition expert Tara Gidus, RD. Isolated fibers are【80】and don't turn juice and yogurt【81】a delicious, grainy food. The downside: There's【82】evidence that they protect【83】chronic diseases. So go【84】and try a glass of fiber-boosted grape juice, or stir some【85】into your coffee along with your artificial sweetener. Just don't forget to also eat more whole grains, beans, and fruits and vegetable-they're【86】lifesavers.

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