Although human studies are still developing, researchers believe this system may play a role in long-term neurological health.
5. Recommended During Pregnancy
Evidence level: Strong
Doctors often recommend left-side sleeping for pregnant individuals.
Benefits include:
Improved blood flow to the uterus and fetus
Reduced pressure on the inferior vena cava, a large vein carrying blood to the heart
Reduced swelling in legs and feet
Improved kidney function
These circulation benefits make left-side sleeping particularly helpful in later pregnancy.
6. May Reduce Snoring
Evidence level: Mixed
Side sleeping in general can help keep the airway more open than sleeping on the back.
This can reduce:
Snoring
Airway collapse
Mild positional sleep apnea
