Current 14++ Sirtfood Diet Adele Weight Loss 2020. The sirtfood diet originated in the uk from nutritionists aidan goggins and glen matten, who published a guide and a recipe book in 2016. The diet focuses on sirtuins, or proteins in your body that specialize in cellular health and. Adele's weight loss has wowed her fans around the world as she dropped a remarkable seven stone to show off her new slim figure.