[smt88]

"Former heavy drinkers" is going to include more people who already started having health issues than the group of current heavy drinkers

[kstrauser]

It also excludes people who died of it. No telling what their rate might be.

[imtringued]

The average age of death being 75 not only excludes heavy drinkers who didn't make it, but also excludes all the healthy people who made it well into their 80s and 90s.