****** Regular pot use might be fun for the young, but when not tapered down, it could lead some to a mid-life crisis. According to a new study from University of California-Davis and Duke University in Durham, North Carolina, those who smoke at least four times a week throughout adult life could experience significant economic and relationship issues by middle age. In this study researchers analyzed a study of about 1,000 subjects who were born around 1972 and nd followed from age 3 to 38 as part of a study from the University of Otago in New Zealand. The authors found that over time, those who smoked pot heavily, increasingly had trouble at work, in personal relationships, difficulty in moving up the economic ladder and even more financial troubles than heavy alcohol users. The researchers also accounted for any childhood adversity, IQ and level of ambition when analyzing the results.