It's not true that only women menstruate. Trans men – with beards, a low voice, and a receding hairline – go to the men's toilets to change their tampons
I would like to point out that I have periods too. As a human. As a woman. Just like that. It affects more people than hunger, lack of access to water, or more recently the coronavirus, which has become a growing problem for many.
My students would have a piece of cloth in their underwear - they were uncomfortable. They would sit in the corner slumped in their seats becoming apathetic, absent. Some of them did not come because they could not even find a mop. I told them: we have to find a solution.
The first extensive report on a problem that at least 500 million people face.