However, sleep position can affect certain health conditions, which is probably where these claims come from.
When right-side sleeping may be less comfortable
1. Acid reflux or heartburn
Some studies suggest that people with Gastroesophageal Reflux Disease (GERD) may experience more reflux symptoms when lying on their right side compared with their left side.
Many people with reflux find that:
- Left-side sleeping reduces nighttime heartburn
- Elevating the head of the bed can also help
2. Pregnancy
Healthcare providers often recommend that pregnant women, especially later in pregnancy, spend time sleeping on their left side because it may optimize blood flow. However, accidentally sleeping on the right side is generally not considered dangerous.
3. Certain heart conditions
There is some research on sleep position and cardiovascular function, but there is no general recommendation that healthy adults should avoid sleeping on their right side.
Potential benefits of side sleeping
Whether on the left or right side, side sleeping may:
- Reduce snoring
- Help some people with mild sleep apnea
- Be more comfortable for certain back conditions
What matters more than which side you choose
Good sleep is usually influenced more by:
- Getting enough sleep
- Maintaining a regular schedule
- Using a supportive mattress and pillow
- Managing conditions such as reflux or sleep apnea
When to talk to a doctor
Consider medical advice if you have:
- Frequent heartburn
- Loud snoring
- Pauses in breathing during sleep
- Persistent daytime fatigue
These symptoms may indicate a condition that requires evaluation.
The bottom line
For most healthy adults, sleeping on your right side is not harmful. The viral warning is largely clickbait. The main exception is that people with Gastroesophageal Reflux Disease may find left-side sleeping more comfortable and experience fewer reflux symptoms.
