• Reading Levels 1 - 5
Science | PSHE | Relationships and health

What do scientists know about periods?

Half of the world's population experience periods at some point in their lives. But still, we know very little about why women have periods, or how exactly they work. In the place of knowledge, many believe myths instead. In this video from BBC Ideas, one expert explains what we do know about periods, what we have yet to learn — and what definitely is not true.

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