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I wonder whether researchers offer any recommendations based on a difference in effect between ingesting vitamin A and beta-carotene. Do people who consume large amounts of yellow vegetables, for example, put themselves at risk? Mary A. TurzilloBerea, Ohio Yellow fruits and vegetables contain large amounts of the vitamin A precursor beta-carotene. However, says Margo Denke […]
- Health & Medicine
Too Much of a Good Thing: Excess vitamin A may hike bone-fracture rate
Dietary studies suggest that people who consume large amounts of vitamin A in foods or multivitamins are more likely to suffer hip fractures than are people who ingest modest amounts.
- Tech
Fiber Helper: Minuscule controllers may open data floodgates
A device that fits on the end of optical fibers may make possible the next big boost in Internet speed without new underground cables.
