Reflux and snoring share some overlapping risk factors and can each make the other more likely, though they're distinct conditions with their own separate causes as well.
How they can influence each other
Acid reaching the throat can cause swelling and irritation in the airway tissue, which may contribute to or worsen snoring in some people. Separately, snoring and sleep apnea involve changes in breathing pattern and pressure in the chest and abdomen that can, in turn, make reflux more likely during sleep.
Shared risk factors
Excess weight, particularly around the abdomen and neck, is a well-established risk factor for both conditions independently, which is part of why they so often appear together rather than one directly causing the other in every case.
When it's worth investigating together
If you have both loud, frequent snoring and reflux symptoms, it's worth mentioning both to a doctor, since sleep apnea (which snoring can be a sign of) sometimes needs its own evaluation, and treating it can meaningfully improve reflux symptoms as a secondary benefit.
