Make an informed decision (Image: Alpha Press)
WHAT makes us unhealthy? Sometimes the answer is easy. In 1854 an English doctor, , founded modern epidemiology by mapping a cholera outbreak in London and noticing that sick people lived near one public water pump. In the now classic version of the story, he had the pump’s handle removed and the outbreak ended.
Often, though, the true links between sickness and environmental exposures are more subtle. Now, a novel method promises a revolution to rival Snow’s, by using our knowledge of human genes to pinpoint how the environment and our lifestyle…
