Many drinkers assume alcohol is probably not as bad for them as illegal drugs like cannabis.
Booze is a big part of mainstream British culture and freely available in shops, whereas many people frown on illegal drugs.
The issue is not only a controversial one, but a complex one – as it depends partly on how you define harm and how much it is used.
But the evidence suggests the overall effects of alcohol on individuals and society could be far more harmful than cannabis – and here is why:
How cannabis can harm the body
Many people believe both alcohol and cannabis do them little harm, but experts say both can pose serious risks.
The potential long-term effects of regular cannabis use include impaired memory and attention, damaged or diseased lungs and airways, according to the World Health Organisation (WHO).