Zanotti says these and similar studies were small, not randomized and shouldn’t be taken as definite proof.įor instance, the studies looked at women who spent all night on their backs and never got up to go to the bathroom. Researchers in New Zealand found that there was a potential increased risk of stillbirth for women who slept the entire night on their back. That means you’ll have less blood flow to yourself and the baby.” So what can this actually do? “So the thought is if you have anything large that’s pushing against the blood flow return, you’ll have less blood flow to your heart. “This big blood vessel is what brings blood flow back to your heart,” Dr. But how bad is it really? The why behind the warningsĪs your uterus gets larger (usually by the time you’re 20 weeks ― that’s five months ― along), it’s big enough that it lies on top of your inferior vena cava, if you’re lying on your back, explains Cleveland Clinic Ob/Gyn Salena Zanotti, MD. After all, every single pregnancy book you’ve read has advised against it. (Heck, who are we kidding? Someone else can do that one permanently!)īut then ― without even meaning to ― you woke up and had a groggy (and panicked!) realization: You were sleeping on your back. You take your prenatal every evening like clockwork. We do not endorse non-Cleveland Clinic products or services. Advertising on our site helps support our mission.
WHICH SIDE SHOULD I SLEEP ON WHILE PREGNANT PROFESSIONAL
You should always consult with a qualified physician or health professional about your specific circumstances.Cleveland Clinic is a non-profit academic medical center. Please note: The Bump and the materials and information it contains are not intended to, and do not constitute, medical or other health advice or diagnosis and should not be used as such. “Leaning against this pillow can make you feel like you’re on your back so that you’re comfortable, but give you enough of a slant or angle so that your uterus is shifted off of the vessels.” “You only need to be slightly shifted onto your side to prevent this concern sometimes this means just putting a pillow under your hip and shoulder on one side,” Heather A. Training yourself to sleep on your side may take time-and props, like pillows. It’s normal to change positions during sleep, and if you wake up on your back, you shouldn’t panic.
But it is surprising how quickly that turning onto your back affects baby: when a mother changed position during sleep, such as from side to back, her baby immediately became less active and still. Each of the 30 women involved in the study were between 34 and 38 weeks pregnant, and each of their pregnancies were complication-free.īased on what we already know about restricted blood flow while sleeping on your back, perhaps it’s not surprising that fetuses were less active when mothers were in this position. Researchers at the University of Auckland used an infrared video camera to record pregnant women’s sleep positions, while also monitoring the heart rates of moms and babies. But until now, no study has ever actually monitored what’s happening to baby when women lie on their backs overnight.
Your back? That position can cause your uterus to put pressure against blood vessels, restricting blood flow to both your heart and your baby’s.
Your stomach? Well, that’s just not an option right now. You probably already know you’re supposed to sleep on your side during the later stages of pregnancy.
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