Calculating Your Due Date by Moon Phase: Myth vs. Medicine

Calculating your due date by moon phases is unscientific and gets you the wrong dates

Pregnancy has always been surrounded by stories, rituals, and folk wisdom. One of the more enduring myths is that you can calculate your baby’s due date based on the phases of the moon. The idea is simple but seductive: the moon influences tides, water, and cycles, so surely it must shape pregnancy timing. Some people claim that conception and birth fol…