Two alcoholic drinks a day over a long period gave male heart attack survivors a 42% lower risk of dying from heart disease than non-drinkers, researchers found.
Their risk of death from any cause was also reduced by 14%, though the benefits were only seen with "moderate" drinking.
Higher consumption wiped out the survival gains and increased the chances of dying so they matched those of non-drinkers.
More top news
The former footballer said he hopes speaking about his grief will help others who find it difficult to talk about their feelings.
Royal Marine Alexander Blackman has spent more than three years in jail since being convicted of murdering an insurgent.
There are believed to be less than 250 of the global population remaining due to poaching and loss of habitat.