Doctors are advising caution with menstrual cups after a user experienced kidney problems due to misalignment. Proper size and insertion are crucial to avoid complications. Menstrual cups are reusable and sustainable alternatives to pads and tampons, but may be challenging for first-time users. A physiotherapist emphasizes that when used correctly, menstrual cups are safe and should not cause discomfort. Teljes cikk (bbc.com europe)