system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does pure alcohol have calories, yet it doesn't contain sugar, proteins or fat?

Will I get fat from drinking large amounts of pure alcohol?
gpt
Alcohol is what is produced when you take sugar and remove as many calories as you can from it without involving oxygen. As a result it still contains a lot of the calories that the initial sugar had.