Snoring is most commonly caused by ectopic fat in the airway, which is driven by a impaired metabolism (96% of adults). The good news is the body really does not want fat in the airway (or in muscles, or the liver, or in the visceral cavity), and this often resolves in a few months after fixing your metabolism.

I used to snore very loudly, extremely so. Doing low carb for a few months resolved my snoring (and many other things).. so I was still very fat but not snoring anymore. Which is a win.