You might want to ignore that incoming call: A new study found that spending just 30 minutes talking on the phone a week is linked with higher blood pressure. According to a report published Friday in the European Heart Journal – Digital Health, Chinese researchers found that chit-chatting for half an hour once a week can lead to a 12% increased risk for the condition, which can result in heart disease and stroke — both leading causes of death in the US. The study reasoned that mobile phone usage emits low levels of radiofrequency energy, which even in short-term exposure,…