There are millions of #pcosdiet posts on social media. Krakenimages.com/ Shutterstock September 7, 2023 Polycystic ovary syndrome: losing weight can help but many sufferers are vulnerable to bad advice on social media Jadine Scragg, University of Oxford; Cervantée Wild, University of Oxford, and Sharon Dixon, University of Oxford PCOS is thought to affect 20% of women worldwide.