Why does raised sensitivity to alcohol have a positive effect on cholesterol?

Slow metabolisers of alcohol are more sensitive to the effects of alcohol.

Because low levels of alcohol have a cholesterol lowering effect, and slow metabolisers have alcohol present in their blood stream for longer, this can have a positive effect on their cholesterol.

It is important to highlight that this beneficial effect only occurs after moderate levels of alcohol intake, there are no positive health effects associated with unchecked alcohol consumption.