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Your search has returned 99 articles:
  • Feature

    The Power of D

    A nutritional supplement that is free of charge, offers a wide range of health benefits and poses little risk sounds like fodder for a late-night TV commercial. But proponents of vitamin D are increasingly convinced that the sunshine vitamin delivers the goods, no strings attached.

    It offers a safe route to better health, these advocates say, by...

    07/01/2011 - 12:45 Body & Brain
  • News

    PCBs may impair fertility

    PCB exposure may interfere with a woman’s ability to get pregnant, a new study of women undergoing in vitro fertilization suggests. The study of 765 women found that those whose blood contained the highest levels of a particular form of polychlorinated biphenyl — one known as PCB 153 — were 41 percent less likely to give birth than women with the lowest levels.

    One contributing factor...

    02/28/2011 - 17:49 Earth & Environment, Body & Brain
  • Science & the Public

    PCBs hike blood pressure

    No one would choose to eat polychlorinated biphenyls, or PCBs — yet we unwittingly do. And a new study finds that the cost of their pervasive contamination of our food supply can be high blood pressure, a major risk factor for heart disease.

    PCBs comprise a family of 209 related, colorless and oily compounds. Discovered more than a century ago, they quickly won widespread adoption as...

    11/17/2009 - 17:43 Biomedicine, Earth & Environment, Humans & Society
  • Feature

    Lettuce Liability

    Little more than a year ago, supermarkets from coast to coast stripped fresh spinach from produce aisles as a food-poisoning outbreak swept the nation. From mid-August through September 2006, virulent bacterial infections sickened at least 204 spinach consumers. Five died and 30 others suffered acute kidney failure.

    Among more than 3,500 genetically unique...

    12/03/2007 - 19:41 Agriculture
  • News

    Salmonella seeks sweets

    Salmonella enterica, a major food-poisoning germ, can enter the tissues of fresh lettuce where no amount of surface washing will evict it. The scientists who reported that finding earlier this year now think that they've gotten to the root of the issue.

    To model salmonella soil contamination from livestock wastes, the researchers seeded sterile manure with one of three toxic strains of...

    11/07/2007 - 10:28 Nutrition
  • News

    How reading may protect the brain

    Workers at lead-smelting plants can suffer substantial neural damage from exposure to the toxic heavy metal. Workers who read well, however, experience comparatively less mental impairment, a new study finds.

    It's not that the better readers were smarter, but that they have more "cognitive reserve," explains study leader Margit L. Bleecker, a neurologist at the Center for Occupational...

    08/14/2007 - 13:33 Earth & Environment
  • News

    Want that fiber regular or decaf?

    Researchers in Spain report that a cup of coffee can deliver a significant portion of daily dietary fiber. The drink hadn't been known to contain any fiber.

    Like the cholesterol-lowering substances found in oat bran, fiber in coffee consists of carbohydrates that the body can't digest, but which dissolve in digestive fluids. However, unlike oat bran's soluble fiber, the fibrous...

    02/20/2007 - 11:51 Nutrition
  • Food for Thought

    Now This Is Depressing . . .

    People who increased their fish consumption to brighten their outlook on life may want to consider alternative strategies. A new review of published studies on the effects of long-chain omega-3 fats—the type found in fish oils—finds "little support" that they "improve depressed mood." However, that's no reason to give up eating fish. Their fats have been linked to a host of health benefits,...

    12/20/2006 - 16:59 Nutrition
  • News

    A Fair Slice: New method makes for equitable eating

    Sometimes, a birthday celebration goes awry when a pair of partygoers squabble over the cake, both preferring the slice with the cherry or with the thickest icing. That sort of spat caught the attention of mathematicians, inspiring a new idea for making divisions fairly.

    The problem hinges on the definition of fair. Steven Brams of New York University and his colleagues propose...

    12/13/2006 - 12:25 Numbers
  • Food for Thought

    Birds Don't Have to Be So Hot

    Last week, Iowa State University issued a news release about how long it takes to cook a turkey if you place it into the oven frozen. The answer: 5.5 hours for a 13- to 15-pound bird cooked in a 325°F oven.

    However, what really caught my attention was something a little lower in the release—that the U.S. Department of Agriculture had issued a statement earlier this year...

    11/20/2006 - 14:15 Nutrition