Why do stars like Adele keep losing their voice?

The long read: More and more singers are cancelling big shows and turning to surgery to fix their damaged vocal cords. But is the problem actually down to the way they sing?
Read more: https://www.theguardian.com/news/2017/aug/10/adele-vocal-cord-surgery-why-stars-keep-losing-their-voices?source=Snapzu