Hearts and cocaine

David Letterman, David Bowie, Robert Palmer, Bill Clinton, Tony Blair. What is it with healthy and usually extremely fit men in their 50's having seriously wonky hearts? Let me take a wild guess. A history of heavy cocaine abuse in the 1980's (Rick James is another example but he was still using and could have died for a number of pharmaceutical reasons). Medical science hasn't had a chance until now to study the long-term effects of cocaine addiction, or even the effects of cocaine addiction that ended 15 or 20 years ago. I wonder what cardiologists are saying in private.