The British singer did not disclose the specifics of her ailment when she posted on social media that her doctors had advised her to rest.
The news was released a little more than five months before her four-night run of stadium concerts in Munich in August.
Her words in a statement were, “Sadly, I have to take a beat and pause my Vegas residency.”
She clarified that she had first became unwell in early November of last year, towards the conclusion of her run of performances, all of which were held in Caesars Palace’s Colosseum.
The residency was then scheduled to end during the holiday season.
Nonetheless, she clarified that on January 19, “the chance to get back to full health before the shows resumed” had been denied to her. She has since done twelve concerts.
Her residency deal calls for her to perform every Friday and Saturday through the end of June.
Tickets holders will receive information “asap” regarding the 10 postponed shows, although new dates have not yet been announced.