Yes. Sleeping position can affect nighttime acid reflux (GERD) symptoms, and the evidence is strongest for sleeping on your left side.
Why the left side may help
Your stomach sits mainly on the left side of your upper abdomen. When you lie on your left side, gravity can help keep stomach contents below the opening to the esophagus. Studies suggest this position can reduce nighttime acid exposure and reflux symptoms.
By contrast, right-side sleeping can worsen reflux for some people, particularly soon after eating.
Other useful strategies
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Don’t lie down for about 3 hours after eating.
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If reflux occurs at night, elevate the head of your bed rather than relying only on extra pillows.
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Avoid meals that you know trigger your symptoms, especially large or fatty meals close to bedtime.
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Maintain a healthy weight if you’re overweight.
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Limit alcohol and avoid smoking.
If you regularly have nighttime reflux, difficulty swallowing, persistent vomiting, unexplained weight loss, vomiting blood, or black stools, seek medical evaluation rather than treating it solely with changes in sleeping position.
And if you’re experiencing reflux more than twice a week, it’s worth discussing with a healthcare professional because you may have GERD requiring specific treatment.
