Word: risking
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Dates: during 2000-2009
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...response. Neither shot has proved effective alone, yet together they seemed to trigger a modest immunity--although no one yet knows why. Fifty-one people who received the vaccine became infected with HIV, compared with 74 who received a saltwater placebo, a barely significant difference. And while a lower risk of infection normally derives from a drop in the amount of virus circulating in the blood--with less virus floating around, there is less chance that HIV can bind to healthy cells--that did not happen in this study. Which means that although those who are vaccinated might be protected...
...begin to analyze the patients' immune responses more closely to tease out the elusive factors that shielded them from HIV. That's more than the last promising vaccine provided. That candidate, made by Merck, not only failed to protect volunteers from infection but also seemed to increase their risk of contracting...
Duke thinks it was the years of regular tanning that caused her melanoma, and the vast majority of scientific literature supports her theory. Exposure to ultraviolet light, whether from the sun or a tanning bed, increases the risk of melanoma, the deadliest type of skin cancer, and teenagers - especially pale-skinned redheads like Duke - are considered among the most vulnerable. In July the cancer-research wing of the World Health Organization (WHO) added tanning beds and sunlamps to its list of human-cancer-causing agents. "The risk of cutaneous melanoma is increased by 75% when use of tanning devices starts...
...Indoor Tanning Association (ITA) dismisses such charges as mere ballyhoo, pointing out that the UV light from tanning beds is no different from sunlight - exposure to either one raises the risk of skin cancer - which is why the tanning industry has always emphasized the importance of moderation, says John Overstreet, executive director of the ITA. He adds that technicians at tanning salons are trained to prevent overexposure and sunburns. "If clients get a sunburn, they are not going to come back," says Overstreet...
...their part, skin-cancer experts recommend that people eliminate the risk of overexposure from the start, by covering up in the sun with long sleeves and pants or at the very least wearing sunscreen. That is especially true on summer vacations, when people who have been indoors most of the year suddenly hit the beach for a week. Melanoma is associated with intermittent exposure to intense sun, particularly before the age of 18, so youngsters need to be extra careful about sun protection, says Robert Dellavalle, chief of dermatology at the VA Medical Center in Denver...