
Optimal Sleep Position During Pregnancy
For expectant mothers, the best side to sleep on is the left side. This position is recommended because it optimizes blood flow and nutrients to the fetus, uterus, and kidneys, while also optimizing kidney function in the mother. It can help in reducing swelling and decreasing pressure on the liver, providing comfort and promoting healthier sleep.
The Importance of Sleep Position During Pregnancy
Sleep is a crucial element of health, especially during pregnancy. As the body undergoes dramatic changes, finding a comfortable sleeping position becomes essential for the mother’s rest and the baby’s growth. Sleep positions can affect not only the quality of sleep but also the well-being of the pregnant woman and the health of the developing fetus. Let’s delve deeper into why the left side is considered the best for sleep during pregnancy and what other positions may entail.
Advantages of Sleeping on the Left Side
Sleeping on the left side is often called the SOS (sleep on side) position and is particularly beneficial due to several physiological reasons:
– Enhanced Circulation: This position prevents the uterus from pressing against the liver (which is on the right side of the body) and allows better blood flow to the placenta, which nourishes the baby.
– Improved Kidney Function: The left-sided position aids in eliminating waste products and fluids from the body, therefore reducing the likelihood of swelling in the legs, ankles, and feet.
– Better Digestion: Gravity can help with the movement of food through the digestive tract when sleeping on the left, which may reduce the risk of heartburn, a common complaint in pregnancy.
Our Top 5 Sleep Aid Picks
Updated September 2026Nature's Bounty Melatonin Quick Dissolve Tablets, 45 Count, 2-Pack
Best for most people. Quick-dissolve melatonin tablets from a widely stocked brand, taken without water. Two bottles per pack.
- Quick-dissolve tablets
- Melatonin
- 45 count × 2
Best when pain keeps you up. Pairs a pain reliever with a sleep aid in one caplet, for nights when headaches or muscle aches are the real problem.
- Naproxen sodium 220 mg
- Diphenhydramine 25 mg
- Non-habit forming
- 80 caplets
MidNite Sleep Aid Chewable Cherry Tablets, 30 Count, 4-Pack
Best chewable. Cherry-flavoured chewables for occasional sleeplessness, no water needed. Four bottles in the value pack.
- Chewable cherry tablets
- For occasional sleeplessness
- 30 count × 4
NOW Foods Melatonin 5 mg, 180 Veg Capsules, 2-Pack
Best value. High-potency 5 mg veg capsules, 180 to a bottle and two bottles per pack, so one order lasts months.
- 5 mg melatonin
- Veg capsules
- 180 count × 2
Natrol Melatonin 10 mg Gummies, 140 Count
Best gummy. Higher-strength 10 mg strawberry gummies for adults who would rather chew than swallow a pill. About a 70-day supply.
- 10 mg melatonin
- Strawberry gummies
- Drug-free
- 140 count
Disadvantages of Other Sleep Positions
Other sleep positions are less recommended for pregnant women due to various drawbacks:
– Back Sleeping: As pregnancy progresses, sleeping on the back can lead to backaches, hemorrhoids, digestive issues, and impair circulation to the heart and the baby. It also increases the risk of experiencing sleep apnea and snoring due to the expanding uterus pressing against the diaphragm and lungs.
– Stomach Sleeping: This position becomes nearly impossible as the belly grows and can be uncomfortable due to the strain it puts on the abdomen and potential harm to the baby.
– Right-Side Sleeping: While not as problematic as back or stomach sleeping, resting on the right side can put pressure on the liver and isn’t as advantageous for blood flow compared to the left side.
How to Sleep Comfortably on Your Side During Pregnancy
Achieving a comfortable side-sleeping position during pregnancy might require some adjustments. Below are some tips to find comfort while adhering to the left-side sleeping recommendation:
Use of Pregnancy Pillows
Pregnancy pillows come in various shapes—such as C-shaped, U-shaped, or wedge-shaped—and they can provide support to belly, back, knees, and feet. These pillows help maintain a comfortable side-lying position and can be positioned to alleviate pressure on different parts of the body.
Supporting the Belly
As the belly grows, it can pull on the spine and cause discomfort. A small pillow or a rolled towel under the abdomen can offer the necessary support to align the spine and reduce strain.
Padding Between the Knees
Placing a pillow between the knees can keep the hips at a neutral position, preventing hip and lower back pain that often arises from the misalignment while sleeping on the side.
Back Support
To prevent rolling onto the back, use a pillow behind the back for additional support. This can also create a cozy nook that helps maintain the left-side lying position throughout the night.
Adjusting to Side Sleeping If It’s Not Your Habit
For those not accustomed to side sleeping, making the transition can be challenging. Here are some strategies to help adapt to this new position:
Create a Restful Environment
A calm and inviting bedroom can enhance sleep quality. Consider room-darkening curtains, earplugs, or white noise machines to create the optimal sleep setting.
Establish a Bedtime Routine
Consistent pre-sleep rituals, like a warm bath or reading a book, signal to the body that it’s time to wind down and prepare for sleep. This can make falling asleep in a new position easier.
Practice Relaxation Techniques
Deep breathing exercises, progressive muscle relaxation or gentle prenatal yoga before bed can help relax the body and the mind, making it easier to fall asleep on the side.
Finishing Thoughts
Sleeping during pregnancy doesn’t have to be a challenge if the correct measures are taken. By settling into the left-side position, not only is comfort maximized, but it also ensures the health and safety of both the expectant mother and the baby. It’s important to remember that while the left side is preferred, switching to the right side occasionally is okay as long as back and stomach sleeping is avoided as pregnancy progresses. By utilizing the right tools like pregnancy pillows, and establishing soothing bedtime rituals, sleeping soundly during pregnancy can become less of a dream and more of a reality. If concerns or discomfort persists, seeking advice from a healthcare provider is always the best course of action. Sweet dreams to all the mothers-to-be!
