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What causes a low lying placenta?

There is no definitive cause for a low lying placenta. Usually, if it is early in the pregnancy, the placenta will shift up and away from the cervix as the uterus expands. If it doesn't, then it seems that there are a few factors that may have some influence on it. Whether the uterus has any scrapes or scar tissue from a c-section or other surgery seems to affect placenta placement. Also, a larger than average placenta (from carrying more than one baby) or an atypical uterus may play a role in causing the placenta to stay in a low position.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.