system
Given the following post, respond as if you're commenting on Reddit:
human
Does sugar/sugary sweets directly cause rotting/decay of our teeth?

 Or does it just feed the biofilms in our mouth that cause rotting?
gpt
No, not directly. Decay is caused by bacteria eating away at the enamel of the teeth. These bacteria will feed off of any kind of sugar or starch, not just sweets. Stuff like potato chips that cling to the teeth can often cause worse damage than sugars, which dissolve quickly in saliva before they can be consumed by said bacteria.