The dissection of the brain of Henry Molaison, an amnesiac, has opened the door to a much more ambitious project.

  Many cystic fibrosis patients owe their lives, at least in part, to a nationwide collection of profiles called a patient registry.

  Russell T. Hurlburt, of the University of Nevada, Las Vegas, explores inner life, and faces skeptics.

  Some species tolerate high levels of tetrodotoxin, and answers may lie in the evolution of sodium ion channels.

  A Colorado woman who became ill after a vacation to Uganda becomes a bit of a medical wonder after surviving a case of Marburg hemorrhagic fever.

  Many hospitalizations result from accidents involving private planes and parachutists, researchers said.

  A small research trial found that adults who cut their viewing time in half burned 120 more calories a day.

  The share of Americans ages 12 to 54 who needed corrective lenses for distance vision was 42 percent in 1999-2004, up from 25 percent three decades earlier.

  Coffee and tea drinkers are less likely to develop Type 2 diabetes than nondrinkers, a study found.

  The deal for the consumer health care group will give Sanofi an over-the-counter presence in the United States.

  The party-line procedural vote proved Democrats had locked in the margin needed to pass a far-reaching overhaul of the nation?s health care system.

  Enmity and acrimony are coursing through a debate with consequences for both sides as the health care overhaul reaches its climactic votes.

  Buried in the Senate health care package are provisions benefiting specific states and constituencies, inserted by the majority leader to secure lawmakers?support.

  Brazil and India are now among the top five government supporters of research into third-world diseases, according to a study.