[DanBC]

So we need fewer drinkers at the high risk end (more than 50 units per week) and fewer drinkers at the increased risk end (less than 50 but more than about 21 units per week).

Neither of these are light to moderate, which is what the title is talking about. You said that we need fewer moderate deinkers. So, why do we need fewer moderate drinkers?

[shawabawa3]

I would guess because almost all heavy drinkers used to be moderate drinkers

edit: Not siding with him, just guessing his opinion

[pfortuny]

Yep, but remember that all heavy drinkers used to be milk-only drinkers also.