This article is mostly reasonable, but it overstates the benefits of sleeping on the left side without providing important context. The evidence suggests that sleep position can matter for certain conditions, but there is no universally “best” sleeping side for everyone.
Here’s a more accurate version:
Does Sleeping on Your Left Side Offer Health Benefits?
You’ve probably heard that sleeping on your left side is better than sleeping on your right—but is that really true?
The answer is that it depends on your individual health, comfort, and any medical conditions you may have. There is no single sleep position that is best for everyone.
Sleeping on Your Left Side
Many people find sleeping on their left side comfortable, and research suggests it may offer benefits in certain situations.
For example, sleeping on the left side may:
Help reduce symptoms of acid reflux or nighttime heartburn in some people by making it less likely for stomach contents to flow back into the esophagus.
Be recommended during pregnancy, particularly in later stages, because it may promote comfortable blood flow, although either side is generally considered acceptable unless a healthcare professional advises otherwise.
Help some people who snore or have mild sleep-disordered breathing, although the effects vary from person to person.
Comfort Matters Most