Andrew Koppel, in other words Ted Koppel's son, was a lawyer. The rates of alcoholism and drug abuse among lawyers as so skyhigh as to be off the charts. And while plenty of lawyers do partake of marijuana, however overall cocaine and heroin do seem to the drugs of choice among lawyers.
However the various agencies that pretend to regulate lawyers try their very hardest, and usually successfully, to keep the general public from finding out the truth about the skyhigh rates of alcoholism and drug abuse among lawyers since lawyers ability to be able to charge two hundred dollars and up an hour and to also present themselves as experts and as extremely intelligent, logical, and highly competent professionals is largely based on the general public not finding out the truth about that sleazy and drug infested Mafia of bribery, lies, fraud, and illegal backroom fixes that pretends it is a legitimate profession and likes to describe itself as the "legal profession." Actually, and based on the "standards" of most lawyers, a much better name for it would be the "illegal profession."
More specifically, and while in any other major profession, and such as for example among teachers, nurses, architects, or doctors, etc, etc, etc, you will find a small percentage that are extremely sleazy and corrupt, however among lawyers the percentage that are extremely sleazy, corrupt, pathological liars, con men, scam artists, and really nothing more than criminals with licenses is well above fifty percent. In fact, a major part of what lawyers to be learn is law school, and law school professors teach, is how to lie, deceive, and practice fraud and deception.