Sick of sticky notes everywhere -- or writing on your hand when nothing else is around? (Come on Type A people. I know you're out there). Well, a new study says there's an easy way to get your memory in gear: eat more chocolate. It's not the chocolate as much as it is the flavanols, which are found in plants, like cocoa, some vegetables and tea. In one of the experiments, a group 50- to 69-year-olds drank a mixture high...

(Thinkstock/Ablestock) In the 72 to 96 hours following a high-ozone day, the risk of cardiac arrest is higher, researchers from Okayama University in Japan said Tuesday in the October Journal of Occupational and Environmental Medicine. Dr. Takashi Yorifuji and other scientists analyzed air pollution data and 559 patients with cardiac arrest in Okayama City between 2006 and 2010, according to a press release, correlating the two to pinpoint a trend. There was a 40-percent increase in cardiac risks after days...

(Thinkstock/Jupiterimages) A new study examined the relationship between arsenic levels in U.S. well water — from a Native American population in the Dakotas and the Southwest — and found that the element increases heart health risks, The New York Times reports. Dr. Ana Navas-Acien of the Bloomberg School of Public Health at Johns Hopkins University in Baltimore compared urinary arsenic levels and disease rates among 4,000 Native Americans, data that have been collected on the study group since the late...