An extract from raw, green coffee beans has been called a "miracle" weight-loss aid. But a study in mice casts doubt on the supplement's fat-burning effects — and even offers preliminary evidence that it could be harmful.
Despite the daunting health challenges Haiti faces, the country has achieved a major step toward eliminating the parasitic infection, which causes severe swelling of the legs. Haiti is on track to wipe out the disease within four years, scientists say.
Needle sharing and drug use put an estimated 4,000 people at risk for contracting HIV every year. Now, the same medications that are used to treat HIV-positive individuals might also protect the uninfected before they engage in risky behavior.
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