The age-old question of the best sleep position doesn’t have a one-size-fits-all answer, but science offers some guidance depending on individual needs. Sleeping on the left side is often touted as beneficial for digestion, due to the anatomical positioning of the stomach and small intestine. This position may reduce acid reflux by preventing stomach acid from creeping into the oesophagus, making it a potentially helpful choice for those suffering from heartburn or reflux.
However, for the majority of people without digestive issues, sleep position is unlikely to significantly affect digestion. Back sleeping, or the supine position, is commonly recommended to ease pressure on the neck and lower back, though it can exacerbate snoring and sleep apnoea by allowing the tongue to obstruct the airway.
Side sleeping is the most prevalent sleep posture and is often better for reducing snoring and managing sleep apnoea, as it helps keep airways open. Pregnant women are frequently advised to sleep on their left side to enhance blood flow to the foetus and avoid pressure on the liver, although sleeping on the right is generally acceptable as well. For those experiencing back or pelvic pain, particularly during pregnancy, placing a pillow between the knees while side sleeping can relieve pressure and improve comfort.
Ultimately, there is no universally optimal sleep position. While left-side sleeping may be advantageous in specific cases, the best position for most individuals is one that promotes comfort, spinal alignment, and restful sleep. And realistically, people often change positions during the night, waking up in a completely different pose than intended.
