Diastolic blood pressure—the lower of the two numbers in a blood pressure reading—is highly likely to cause neurotic personality trait, finds research. And keeping it under control can help curb neurotic behaviors, anxiety, and heart and circulatory diseases, conclude the researchers. High blood pressure is a major risk for cardiovascular disease and thought to be associated with psychological factors, such as anxiety, depression, and neuroticism—a personality trait characterized by susceptibility to negative emotions, including anxiety and depression. But which causes which isn't entirely clear. In a bid to find out, the researchers used a technique called Mendelian randomization. This uses...