A court-appointed guardian is dropping her attempt to force an 11-year-old Amish girl with leukemia to resume chemotherapy after she and her parents fled their home to avoid treatment.

The move filed in court Friday will likely bring an end to a months-long fight between Sarah Hershberger's family and a hospital that began when her parents decided to halt the treatments because they were making the girl sick.

The latest hopes of curing AIDS were dashed Friday when U.S. researchers said HIV returned in two men who briefly eradicated the virus after bone marrow transplants for cancer.

Experts described the discovery as a "disappointment," but said it offers important new clues in the hunt for the human immunodeficiency virus's elusive hiding places in the body.

Hong Kong health authorities on Friday confirmed a new human case of the deadly H7N9 bird flu, the second case to come to light in less than five days.

An 80-year-old man has been infected and is hospitalized in the southern Chinese city, Hong Kong Center for Health Protection controller Leung Ting-hung told reporters at a press conference.

The Uruguayan government Friday launched a campaign warning that "all drug use has risks," days before the South American nation becomes the first country in the world to legalize marijuana.

Uruguayan lawmakers will vote Tuesday to green-light a marijuana bill, part of a social experiment designed to combat drug-trafficking.

A diet of the healthiest food costs about $1.50 (1.10 euros) more per person per day than the least healthiest, according to a survey of 10 wealthy and middle-income countries published on Thursday.

Researchers carried out an overview of 27 previously published investigations into dietary patterns that had solid data about what people ate each day and how much it cost.

A roadblock in the brain makes reading difficult for people with dyslexia, a new study suggested Thursday, contradicting long-held opinion.

The findings in the U.S. journal Science add to an ongoing debate over whether the inherited neurological disorder is caused by faulty brain wiring or the brain's inability to understand the interaction of sounds and symbols that form language.

You can hear the "All of us are crazy for tango" program before you can see it: Just follow the orchestra's plaintive chords through the labyrinthine passageways of the Hospital Borda.

There, in a dance hall deep inside the public hospital where mentally ill men have been treated for 150 years, both patients and visitors discover how much they have in common in dance classes open to all. The program's name, playing off a common expression for mental illness, reflects the enthusiasm of both patients and visitors for Argentina's national dance.

Sweden, where bed-sharing between parents and infants is widespread, issued advice Wednesday warning that the practice with newborns increased the risk of sudden infant death.

"It's important that children under three months sleep in their own beds," Kerstin Nordstrand at the National Board of Health and Welfare told Agence France Presse.

The number of people suffering from dementia has risen 22 percent in the past three years, with 44 million people living with the disease worldwide, according to a study released Thursday.

The report from Alzheimer Disease International predicts that the number of people suffering from the disease will triple worldwide to 135 million by 2050.

A drug used to treat advanced breast and colorectal cancers has been linked to sometimes fatal skin reactions in patients, its Swiss manufacturer and Canadian health officials said Wednesday.

Xeloda, which treats advanced cancer after complete surgical removal, can cause "severe skin reactions," Health Canada said in a statement.