Correlation -- yes! Though it would be better to say "inverse correlation found between alcohol and CHD".
Many people don't get that this observation is entirely consistent with alcohol's increasing the risk of CHD.
An analogy is that car accidents correlate strongly with use of the brake pedal. Yet we know brake pedals reduce the risk of car accidents. If asked we can explain why this is so.
>The exact mechanisms are as yet unclear
If they were doing proper, hard science they would be conjecturing theories about such mechanisms and then testing those theories.
Many people don't get that this observation is entirely consistent with alcohol's increasing the risk of CHD.
An analogy is that car accidents correlate strongly with use of the brake pedal. Yet we know brake pedals reduce the risk of car accidents. If asked we can explain why this is so.
>The exact mechanisms are as yet unclear
If they were doing proper, hard science they would be conjecturing theories about such mechanisms and then testing those theories.