Body & Brain

Pack-a-day habits on the wane, plus Haitian cholera and omega-3s in this week’s news

Haitian cholera underestimated
The United Nations might be underestimating the human toll posed by Haiti’s ongoing cholera epidemic, according to researchers at Harvard Medical School and the University of California, San Francisco. Using a mathematical model, the team calculates that nearly 800,000 more cases of cholera could occur before the epidemic ends, killing an additional 11,000 people.