No, says a 2013 study called "The Effect of Sleep Position on Perceived Facial Aging." It was conducted by plastic surgeon, Dr. Brett Kotlus. He asked 100 women about their favorite sleep positions, then independent researchers digitally examined the women's faces to see if more wrinkles developed on the side they reported as their preferred sleep position. The results? There was no cause and effect between sleep position and wrinkles. Women who sleep on their left side didn't have more wrinkles or sagging on the left than women who sleep in other positions.
But, Dr. Kotlus did find more wrinkles on the left side of faces in general. That is due to sun exposure while people are driving. There is an increase in cancer rates on the left side also.
What's more, Dr. Kotlus determined that sleeping on silk, as opposed to, cotton has no effect in preventing wrinkles either.
So instead of worrying about sleeping on your side, or on cotton, you can just apply sunscreen.
For the record, I'm a stomach sleeper, and sometimes I do wake up with indentions on my face, but they usually disappear before I leave the house. Good, I'll add my own experience to the research.
As my momma says, "I hate doing stupid stuff for nothing." Oh, like restricting the most comfortable way to sleep; buying expensive pillows to help you do it; and forcing yourself to sleep in one position. Feel free to toss and turn all you wish!
You may also enjoy:
The Tranquility Pod
Masters Of Sex: A Review
Sleep Is crucial To Good Health
A Blanket Designed For Outer Space