Special Reports

Americans consume more than $7 billion a year worth of yogurt, with hundreds of new yogurt products introduced annually. In survey after survey, consumers say the healthfulness of yogurt is top among the reasons they eat it.

Surveys have shown that a large majority of Americans are confident in the safety, quality and effectiveness of products marketed as dietary supplements (a term derived from a 1994 law that questionably grouped drug-type herbal and botanical extracts with essential vitamins and minerals). So many were shocked at the recent news that four out of five popular herbal remedies sold at some of the nations leading retailers didnt contain any of the promised ingredients. The investigation by the New York State attorney generals office charged GNC, Target, Walgreens and Walmart with selling fraudulent and potentially dangerous products and demanded the products be yanked from store shelves.

Take a look in your pantry. Do you see whole-grain pasta? Does the label on your bread say 100% whole wheat? (Are you sure? Dont be fooled by terms like multigrain.) Is your breakfast cereal made with whole grains?We are very fortunate these days-for almost any type of baked product there is a whole-grain option that one can choose in place of the refined-grain option, says Alice H. Lichtenstein, DSc, director of Tufts HNRCA Cardiovascular Nutrition Laboratory. Just be careful; dont try to judge whether something is made from whole grain by its color. It is important to read the label the first time, just to make certain. Some light-colored products are made with white whole grains and some dark-colored products are not and just appear so because caramel or other coloring was added.

Whole grains or foods made from them contain the entire grain seed-all the parts in their original proportions, including the naturally occurring nutrients. According to the Dietary Guidelines for Americans, if the grain has been cracked, crushed or flaked, a food must retain the same relative proportions as they exist in the intact grain to be called a whole grain. This means that 100% of the original grain-all of the bran, germ and endosperm-must be present to qualify as a whole grain. Refined grains retain only the endosperm portion of the original seed.

Although whole grains are generally a good source of fiber, they are far from the only way to boost your fiber intake. Other high-fiber foods include:

Nutrition is not a science of breakthroughs, explains Tufts professor Jeanne Goldberg, PhD, founder and director of the Friedman Schools Nutrition Communication Program, which trains professionals to explain research findings in ways that the public can understand. Nutrition research often moves the needle only a little bit at a time. Its evolution, not revolution, she says.

When it comes to getting advice from doctors on TV, you might be just as well off consulting the fictional Marcus Welby, MD, or Dr. Kildare rather than the real physicians on popular talk shows. A new study published in the journal BMJ analyzed recommendations from 40 randomly selected episodes of each of the two highest-rated medical programs, The Dr. Oz Show and The Doctors. Overall, barely half the 160 recommendations could be supported by scientific evidence.

What do those blood-pressure numbers mean? Blood pressure is typically recorded as two numbers, each measured in millimeters of mercury (mmHg). The numbers reflect how high the pressure pushes a column of mercury in a device called a sphygmomanometer (much as the mercury rises in a thermometer in response to heat).

About one in three American adults, some 67 million people, have high blood pressure, one of the most dangerous risk factors for stroke. If youre age 65 years or older, the odds are even greater that you have hypertension: 64% of men and 69% of women ages 65 and up have high blood pressure, according to the US Centers for Disease Control and Prevention.

Vitamin K, once thought important primarily for blood clotting, may have a much wider array of health benefits. One recent Spanish study reported that people with the highest dietary intake of vitamin K were at significantly lower risk of mortality from cardiovascular disease, cancer and all causes. And if youre not already consuming plenty of vitamin K-found in dark leafy greens, broccoli, Brussels sprouts and other vegetables (see box)-its not too late to start: The study also found that people who increased their vitamin K intake were at lower mortality risk.