Statement:
An average person in Saint Lucia drinks less alcohol than in Iran

In the Alcohol average daily consumption rating Saint Lucia holds position #43 2016 out of 189 and Iran is #9 out of 189 2016.
Position of Saint Lucia is better than position of Iran.
Iran is leader of the "Alcohol average daily consumption" rating. So people in Iran are more likely to experience problems related to the consumption of alcohol in social, healthcare, and economical areas, compared to Saint Lucia

Referencies:

  1. Alcohol average daily consumption 2016 by WHO
    The countries in the rating sorted by 'Both sexes' in descending order.
    Iran 'Both sexes' value is 61.4
    Saint Lucia 'Both sexes' value is 42.8