natural childbirth
US /ˌnætʃ.ər.əl ˈtʃaɪld.bɜːrθ/
UK /ˌnætʃ.ər.əl ˈtʃaɪld.bɜːrθ/

1.
childbirth without medical intervention, especially without pain-relieving drugs or surgical procedures
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Many women opt for natural childbirth to experience the process fully.
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She prepared for natural childbirth with breathing exercises and meditation.