Colin Snow
Sleeping on the left or right side has its own set of advantages and disadvantages. While sleeping on the left side is recommended for pregnant women as it improves blood flow between the heart, fetus, uterus, and kidneys, sleeping on the right side is suggested for people with heart conditions. Side sleeping, in general, is considered to be one of the healthiest sleep positions as it offers improved spinal alignment and a reduced risk of snoring.
Which is better to sleep on: left or right?
| Characteristics | Values |
|---|---|
| Spinal alignment | Sleeping on either side can help with spinal alignment, but a mattress that is too soft or too firm can cause spinal misalignment. Medium-firm beds are recommended for side sleepers. |
| Snoring | Sleeping on either side can help reduce snoring, but sleeping on the left side is better for those who experience acid reflux. |
| Heart conditions | Sleeping on the right side is better for people with heart conditions. |
| Pregnancy | Sleeping on the left side is recommended for pregnant people as it improves blood flow between the fetus, heart, uterus, and kidneys. |
| Gastroesophageal reflux disease (GERD) | Sleeping on the left side may help with GERD. |
| Heartburn | Sleeping on the right side may worsen heartburn symptoms. |
| Skin | Sleeping on your side can cause creases on your face, which can lead to breakouts and chronic changes to the skin. |
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What You'll Learn
Pregnant people may benefit from sleeping on their left side
Sleeping on the left side is often recommended for pregnant people, especially during the last trimester. This is because it improves blood flow between the heart, fetus, uterus, and kidneys, while keeping pressure off the liver and other internal organs.
Sleeping on the left side during pregnancy can help reduce the risk to the baby by ensuring optimal blood flow. As the fetus gets bigger, there is a greater chance of compression of the blood flow to the uterus. Pressure on major blood vessels can reduce blood flow to the baby and decrease their oxygen supply.
Research has shown that settling down to sleep on the side, rather than on the back, can reduce this risk. Sleeping on the left side is considered ideal as it keeps pressure off the inferior vena cava (IVC), a large vein that runs parallel to the spine on the right side and carries blood to the heart and, in turn, to the baby.
Pregnant people can also try using pillow props to get into a comfortable position. Medium-firm beds are also recommended for side sleepers as they provide a balance between cushioning and support, preventing spinal misalignment.
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People with heart conditions may prefer sleeping on their right side
While side sleeping is considered one of the healthiest sleep positions, offering benefits such as improved spinal alignment and a reduced risk of snoring, the question of whether one should sleep on the left or right side has been a subject of debate. The left side is often recommended for pregnant people as it improves blood flow between the heart, fetus, uterus, and kidneys while keeping pressure off the liver. It is also beneficial for those who experience acid reflux or gastroesophageal reflux disease (GERD).
However, for people with heart conditions, sleeping on the right side may be preferable. Several studies have found that individuals with congestive heart failure or a heart muscle disease called consecutive dilated cardiomyopathy often prefer sleeping on their right side. This preference could be a protective mechanism related to alterations in heart positioning, increased lung pressure, or discomfort due to the sensation of the heart beating against the chest wall. Additionally, sleeping on the right side may help prevent arrhythmia, hypertension, and heart failure by opening up the airways and reducing the risk of sleep apnea.
While the exact mechanisms and the overall influence of sleeping position on heart health are not yet fully understood, it is clear that quality sleep is essential for maintaining a healthy heart. Adopting good sleep hygiene habits, such as exercising during the day, establishing a nightly routine, and setting a regular bedtime, can help improve sleep quality and, consequently, heart health.
It is worth noting that the choice of sleeping position should ultimately be guided by individual comfort. If you experience discomfort or pain in a particular position, it is recommended to try a different sleeping position.
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Sleeping on your left side may help with acid reflux
Sleeping on the left side is recommended for people with gastroesophageal reflux disease (GERD). This is because the oesophagus and its muscle ring are positioned higher than the stomach when lying on the left side, allowing acid to exit the oesophagus more quickly. This reduces the time that the oesophagus is exposed to stomach acid, thereby reducing the symptoms of acid reflux.
Several studies have found that sleeping on the left side reduces acid reflux symptoms. One study, published in The Journal of Clinical Gastroenterology, found that the total amount of reflux time was significantly greater when subjects lay on their right side. Another study, published in The American Journal of Gastroenterology, found that sleeping on the left side reduced nocturnal GERD most effectively compared to sleeping on the back or the right side.
Sleeping on the left side is also recommended during pregnancy, especially during the last trimester. This is because it improves blood flow between the heart, fetus, uterus, and kidneys, while keeping pressure off the liver and internal organs.
For people with acid reflux, adjusting the sleeping position and making changes to the mattress or bed frame can help improve sleep quality. In addition to sleeping on the left side, it is recommended to prop up the top of the bed by at least 6 inches to reduce reflux symptoms.
It is important to note that while sleeping on the left side may help reduce acid reflux symptoms, it may not be comfortable or suitable for everyone. People with heart conditions, for example, might experience discomfort on their left sides and may prefer to sleep on their right sides.
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A medium-firm mattress is best for side sleepers
Sleeping on the left or right side has its own set of benefits. Left side sleeping may benefit pregnant people or those who experience acid reflux, while right side sleeping may be preferred by people with heart conditions. Side sleeping is also considered to be one of the healthiest sleeping positions, as it offers better spinal alignment and a reduced risk of snoring.
Now, when it comes to mattresses, a medium-firm mattress is the best option for side sleepers. This is because they balance contouring and support, providing enough cushioning for the heavier parts of the body, such as the hips and shoulders, to sink into the mattress without causing spinal misalignment. A mattress that is too soft will cause the hips and shoulders to sink too deeply, leading to aches and pains, while a mattress that is too firm will not provide enough cushioning for these pressure points, resulting in discomfort and spinal misalignment.
The Helix Midnight Luxe mattress is a popular choice for side sleepers as it offers a medium-firm feel with impressive pressure point relief. Its mixed-foam design provides excellent support and prevents sagging along the perimeter over time. The Brooklyn Bedding CopperFlex mattress is another great option for side sleepers, offering a medium-firm feel with plush surface layers and zoned support for consistent pain and pressure relief.
When choosing a mattress for side sleeping, it is important to consider your body weight. Side sleepers who weigh less than 130 pounds may prefer a softer mattress, while those who weigh more might find a medium-firm or firm mattress more comfortable and supportive. Additionally, heavy side sleepers over 250 pounds should consider a medium-firm or firm mattress for additional lumbar support.
Lastly, while having the right mattress is important, other factors can also contribute to a comfortable sleeping experience. Using a firm pillow underneath the head and between the knees can help improve spinal alignment and reduce joint pain. Keeping the chin neutral and avoiding tucking it into the chest is also crucial to prevent neck pain.
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Side sleeping may reduce snoring
Sleeping on your side may help to reduce snoring. This is because sleeping on your back causes the base of your tongue and soft palate to collapse into the back of your throat, restricting your airway and causing a vibrating sound during sleep. Side sleeping helps prevent the airway from collapsing and can reduce snoring. Sleeping with the upper body at an incline can also help to reduce snoring by decreasing upper airway collapsibility and increasing the upper airway area.
Sleeping on the left side is recommended for pregnant people as it improves blood flow between the heart, fetus, uterus, and kidneys, while keeping pressure off the liver. It is also beneficial for those who experience acid reflux or heartburn, as it keeps pressure off the internal organs. However, people with heart conditions might prefer sleeping on their right sides.
While sleeping on your side can help to reduce snoring, it is not a guarantee. Other factors, such as sleep stage, alcohol consumption, tobacco use, and nasal congestion, can also contribute to snoring. Additionally, some people may snore regardless of their sleeping position.
To improve snoring, it is recommended to avoid sleeping on your back. If you cannot sleep on your side, try propping your head up at an angle to improve your airway passage. Adjusting your mattress angle can help alleviate heartburn symptoms and improve sleep in those with gastroesophageal reflux. A mild incline of around 12 degrees is comfortable and effective for improving snoring and sleep.
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Frequently asked questions
Sleeping on the left side is recommended for pregnant people as it helps keep the uterus off the liver, allowing the heart to pump blood more efficiently. It also helps with acid reflux and gastro-esophageal reflux disease (GERD) by improving digestion and reducing acid exposure. Additionally, it may help with brain health by distributing toxins throughout the brain, allowing the body to eliminate them.
Sleeping on the right side may be preferred by people with heart conditions and heart failure as it keeps the fetus's weight from applying pressure to the vein that carries blood back to the heart. It is also believed to decrease nervous system activity, which may lead to reduced anxiety and depression, and help control heart rate and blood pressure.
Sleeping on the left side may cause slight changes to the heart's position in the chest due to gravity, although more research is needed to confirm this.
There is limited research suggesting that right-side sleepers experience more nightmares than left-side sleepers.
While the sleeping position is important, it is more crucial to focus on getting enough rest. Stick to a consistent sleep schedule, maintain good sleep hygiene by reducing screen time before bed, and practice daily exercises for both your body and mind.
