Alcohol is healthy because it can reduce heart disease.

The argument

The argument is a comparative one about the largest category of harm. Heart disease — including heart attacks and strokes — is a major cause of death and of medical problems in our society, so an intervention reducing it would be working against the condition most likely to kill people. Alcohol consumption, proponents point out, has been linked to a reduction in heart disease, and they identify several mechanisms through which the effect is said to operate. The first concerns cholesterol. Alcohol consumption can increase levels of HDL cholesterol in the bloodstream, and HDL is the fraction understood to be protective: it is associated with the removal of cholesterol from circulation rather than its deposition in artery walls. Raising it moves the balance in a favourable direction on a measure clinicians actually use. The second and third concern the mechanics of the events themselves. Heart attacks and strokes are typically precipitated by clotting, and alcohol can reduce blood clotting. Inflammation is also implicated in the processes producing them, and alcohol can reduce inflammation as well. Each of these addresses a step in the causal chain leading to an acute cardiac event rather than a general risk score, which is why proponents treat the mechanisms as explanatory rather than incidental. The argument's structure is therefore that of a specific, mechanistically grounded benefit. It does not claim alcohol is harmless in every respect, but that on the single largest cause of death in developed societies its effect has been found to run in the protective direction — through raised HDL, reduced clotting and reduced inflammation. On that basis proponents conclude that drinking cannot be classed as simply unhealthy. A substance acting against heart disease through three identified pathways is, on this reasoning, making a contribution to health on the measure carrying the most weight.

Premises

Counter-arguments

-There is not proven causational evidence for alcohol improving heart health. -Not everyone who consumes alcohol will do so in healthy amounts. -Alcohol can cause other health problems such as obesity that outweigh its benefits.

Rejecting the premises

[Rejecting P1] Not in dispute, and it establishes only that cardiovascular risk matters — which no one denies. [Rejecting P2] The mechanisms are real and the population evidence is far weaker than the premise implies. The apparent benefit comes largely from observational studies whose non-drinking comparison groups include people who stopped because they were already ill, and genetic studies designed to avoid that problem find no protective effect — with recent reviews concluding there is no level of consumption that improves health overall. [Rejecting C] The conclusion generalises from one organ system to health as a whole. Alcohol is an established carcinogen and contributes to liver disease, hypertension and dependence, none of which the premises weigh against the effect they describe.