Alcohol is a double-edged sword with many health benefits if consumed in moderation but detrimental if consumed in excess.
Therefore, it is important for the general public to understand how to consume alcohol sensibly, its health benefits, as well as the dangers of drinking in excess. The first edition of the book focused on guidelines for drinking based on published scientific evidence of health benefits of alcohol as well as adverse effects of consuming too much alcohol without providing any judgement on what a person should or should not do. Those guidelines were changed in 2015.