Weed users are much more likely to suffer a heart attack, stroke or other life-threatening heart condition than people who don't indulge, a new study says.Adults under 50 are more than six times as likely to suffer a heart attack if they use marijuana, compared to non-users, researchers reported Tuesday in the journal JACC Advances.They also have a dramatically higher risk of stroke, heart failure and heart-related death, researchers said."Asking about cannabis use should be part of clinicians' workup to understand patients' overall cardiovascular risk, similar to asking about smoking cigarettes," lead researcher Dr. Ibrahim Kamel, a clinical instructor at...