Heavy metal hazard
Cigarettes from China have concentrations of potentially cancer-causing heavy metals two to three times those found in Canadian cigarettes, a survey of 13 Chinese brands has found. The exceptionally high levels of arsenic, lead and cadmium are known to amplify the well-known hazards of tobacco smoke (Tobacco Control, DOI: 10.1136/tc.2009.030163).
Mouse memory jogger
Forgetful elderly mice have had their memories refreshed by UE1961, a drug that dampens the effects of stress hormones in the brain. After 10 days on the drug, the mice could perform as well as young mice in memory tests in mazes, whereas…
