A new study in England suggests that serving beer in smaller glasses could help people drink less.
When pubs stopped offering pints and only had two-thirds of a pint as the biggest size, people bought about 10% less beer.
This could be because people often think about how many drinks they want rather than the amount they're actually drinking.
It's just one way to think about reducing the harms caused by too much alcohol, alongside things like making alcohol more expensive or limiting advertising.
