What counts as heavy menstrual bleeding?

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You may have menorrhagia if your period lasts for more than seven days, or if you need to change your tampon or pad in less than two hours. Photo: Pexels


(Mira Miller/ Very Well Health) — No one really tested the absorbency of menstrual products with real period blood before—not even the manufacturers themselves.

Many consumers were shocked by a recent study published in the journal BMJ Sexual and Reproductive Health, which found that most period products had either a much lower or higher capacity for blood than what was advertised. Researchers tested tampons, sanitary pads, menstrual cups and discs, and period underwear.

If you have heavy menstrual bleeding, also known as menorrhagia, you might have periods that last for more than seven days or require a change of tampon or pad after less than two hours.

Health guidelines recommend counting how many pads or tampons you use in order to track menstrual flow.2 But this method is likely inaccurate because of the discrepancy between the advertised absorbency of period products and reality. So how can you tell when you should seek medical attention? (…)

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