Under the weather
Grey days don’t just affect our mood; we’re also more likely to have a heart attack! Swedish researchers looked at more than 274,000 heart attack patients, along with more than 3.5 million data points on weather at each site from 1998-2013. They found temperature played a large role – a drop from 20°C to -1°C was associated with 14 percent increased risk – as was less sunshine. When the hours of sunshine without clouds decreased from 10 hours a day to none, the risk went up by 11 percent. Researchers say seasonal lifestyle changes, depression and even flu season could be behind the rise.