Sleeping on your side, especially the left side, helps improve digestion and is also particularly beneficial for pregnant women.
One of the simplest ways to improve sleep quality is something we often overlook: position in which we sleep.
Each position has its advantages and disadvantages. Sleeping on your back can help keep your spine aligned, but it can make snoring and airway obstruction worse. Lying on your stomach can open your airways, but it puts pressure on your neck, spine, and digestive organs.
Research comparing common sleeping postures suggests that sleeping on your side offers the best overall balance between spinal alignment, breathing and digestion. Within this category, sleeping on the left side appears to provide the greatest health benefits, especially for the digestion and during pregnancy.
For people who wake up with heartburn, chest discomfort or stomach pain, nocturnal acid reflux could be the culprit. Acid reflux occurs when stomach acid rises into the esophagus, causing a burning sensation. In chronic cases, it can progress to gastroesophageal reflux disease (GERD), a common condition that affects adults and children, says .
Body position influences how gravity affects the digestive tract. When a person lies on their right side, the lower esophageal sphincter — the muscle that acts as a barrier between the stomach and esophagus — may be below the stomach contents, allowing acid to rise more easily. Lying on your left side positions the sphincter above the stomach, making reflux less likely and aiding the natural movement of food through the digestive system throughout the night.
The benefits of sleeping on the left side are even more significant during pregnancy. As the uterus expands, lying on your back increases pressure on the spine and major blood vessels. At the end of pregnancy, the weight of the uterus can compress the inferior vena cavaa large vein that carries blood back to the heart, potentially reducing blood circulation to both mother and fetus.
Therefore, doctors advise pregnant women, especially in the third trimester, to sleep on their side, ideally on the left side. This position improves the blood flow to the uterusfacilitates the delivery of oxygen and nutrients to the baby and can reduce swelling in the legs and ankles. Experts also recommend slightly bending your knees and placing a pillow between them for comfort.
While quantity of sleep continues to be important, experts emphasize that sleep quality is equally crucial. For anyone suffering from reflux, back pain or pregnancy discomfort, simply turn to the left side can be a surprisingly effective solution.
