How Sleeping on Your Left Side Improves Gut Health
One of the biggest perks? Less GERD and heartburn.
- The stomach sits slightly left of center, with the esophagus connecting at the top-right.
- On your right side, the stomach can sit above the esophagus, making acid reflux easier.
- On your left side, the stomach stays below the esophagus, letting gravity keep acid in place.
A study in The Journal of Clinical Gastroenterology found that left-side sleeping significantly reduced reflux episodes compared to right-side or back sleeping.
Potential Lymphatic Support
Your lymphatic system, which helps remove waste and support immunity, drains mainly into the thoracic duct on the left. Some experts suggest that left-side sleeping may help lymphatic flow, indirectly supporting gut health and inflammation balance. (Research is limited, but the idea is intriguing.)
When Left-Side Sleeping May Not Be Ideal
It’s not for everyone:
- Pregnant women are often encouraged to sleep on their left—so that’s a bonus.
- People with certain heart conditions should check with a doctor if unsure.
- Shoulder pain can make left-side sleeping uncomfortable—try a supportive pillow to relieve pressure.
