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More than one in four Americans has taken prescription painkillers in the past year, even as a majority say that abuse of these medications is a very serious public health concern, according to new Johns Hopkins Bloomberg School of Public Health research.

A large-scale survey of older Americans living at home or in assisted living settings found that 15 percent are frail, a diminished state that makes people more vulnerable to falls, chronic disease and disability.

As much as 47 percent of the edible U.S. seafood supply is lost each year, mainly from consumer waste, new research from the Johns Hopkins Center for a Livable Future (CLF) suggests

Marijuana use among U.S. high school students is significantly lower today than it was 15 years ago, despite legal developments such as the decriminalization of the drug in some states and approval of recreational use in a handful, new research suggests.