Health

Medical association backs health system reform

The American Medical Association on Monday rebuffed dissident members and voted to stick with support for ongoing health reform efforts, while reiterating wariness over proposals that threaten doctors' pocketbooks and independence.

UK starts study on using human DNA in animals

British scientists begin a new study on Tuesday to consider how human DNA is used in animal experiments and to determine what the boundaries of such controversial science might be.

Scanning invisible damage of PTSD, brain blasts

Powerful scans are letting doctors watch just how the brain changes in veterans with post-traumatic stress disorder and concussion-like brain injuries - signature damage of the Iraq and Afghanistan wars.