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Science News for April 24, 2000


Physician and nurse recommendations and media messages associated with placing infants on their backs to sleep

A recent study found that physician recommendations and media messages significantly influenced caregivers' decisions to place infants on their backs for sleep. Between 1994 and 1998, the percentage of white infants sleeping on their backs increased from 27% to 58%, while black infant back sleep rates rose from 17% to 31%. The study su...

Vitamin K intake may be helpful in preventing hip fracture

A study published in the American Journal of Clinical Nutrition found that high vitamin K intake was associated with lower incidence of hip fractures in elderly participants, while no correlation was found with bone mineral density or apo-E genotype. Researchers analyzed data from the Framingham Heart Study and discovered a significant...

SourceAmerican Journal of Clinical Nutrition·JournalAmerican Journal of Clinical Nutrition·DateApr 24, 2000

Lower metabolic rate places black women dieters at greater risk for weight regain

A study published in the American Journal of Clinical Nutrition found that black women who lost weight through dieting had a significantly lower energy expenditure than white women. The researchers suggest that differences in body composition, including denser bones and more lean tissue in the limbs, may contribute to this disparity.

SourceAmerican Journal of Clinical Nutrition·JournalAmerican Journal of Clinical Nutrition·DateApr 24, 2000

Neuronal growth in the brain may explain phantom limb syndrome

Researchers at Vanderbilt University found that neurons in adult monkey brains grow and form new connections in somatosensory areas after amputation or spinal cord injury, suggesting a link to phantom limb syndrome. This discovery may lead to treatment options for phantom limb pain and potentially repair severed spinal cord injuries.

SourceVanderbilt University·JournalProceedings of the National Academy of Sciences·DateApr 24, 2000