Although she prefers to keep herself out of the spotlight for the most part, on the rare occasions when Sia steps in to the spotlight to share a personal part of herself, it’s usually for an inspiring reason.

In 2017, the popstar took to Twitter to respond to people selling a naked paparazzi shot of her online by simply sharing the photo in question, adding the caption: “Someone is apparently trying to sell naked photos of me to my fans. Save your money, here it is for free!”

And just one month later, Sia shared a column which questioned whether it was ethical for her to use child-star Maddie Ziegler as the face of her operation, admitting that it is a decision she grapples with “often,” and sharing that she asks Ziegler “weekly” about whether she still wants to work with her.

Now, in a powerful message of solidarity again posted on Twitter, the singer-songwriter has opened up about another side of her personal life: her health.

Sia just revealed she is living with Ehlers-Danlos syndrome (EDS) in a powerful new tweet