Daily Mail journalists select and curate the products that feature on our site. If you make a purchase via links on this page we will earn commission - learn more Why is it that our everyday skincare, ...

I had several abdominal surgeries decades ago.

From scooping to skincare, online trends are reshaping how we talk about periods. But menstruation is complex, varied and still under researched.

Blow up a long balloon and two things happen: it gets longer and it gets wider. Now imagine a living cell that inflates itself under enormous pressure and yet only grows longer, never adding width.

Hint: vinegar is involved.