“The Sirtfood Diet is all about losing weight and feeling fantastic through eating great-tasting food. It’s based on extensive research into the power of key plant foods, which when added to our diet turn on fat burning and improve wellbeing,” source close to the singer, who recently signed a more than $100-million deal, told MailOnline.
Adele released her new single, “Send My Love (To Your New Lover)” on May 16.
The megastar will kick off the North American leg of the Adele Live 2016 world tour on July 5 in Minnesota.
