The Stay With Me hit-maker credits his new super trim figure to nutritional therapist Amelia Freer, whose other celebrity clients include James Corden.
The food expert’s book Eat. Nourish. Glow. became an overnight bestseller following Sam’s high praise.
In April 2015 he revealed he’d lost a whopping three stone – including one stone in just two weeks.
Posting on Instagram at the time, he wrote: “Amelia Freer has helped me lose over a stone in two weeks and has completely transformed my relationship with food.
“Everyone go check out her incredible book, and start to live healthy.
“It’s not even about weight loss it’s about feeling happy in yourself.
“Love you Amelia & thank you for making me feel so happy inside and out.”
So what advice did Sam follow to have the weight drop off him so fast?
Cutting gluten, dairy and refined sugar out of his diet completely, alongside weight training, were key for Sam shedding the pounds.
He also took up yoga and his diet included herb infused ice cubes to snack on.
Speaking to CBS, Sam revealed: “I love food so it’s a constant battle. It’s always going to be a battle but I’m trying my best.
“I’ve just not eaten like a pig anymore – that’s what I’m doing, basically.”
Amelia’s tips include: “Eat as though you are having dinner with your future parents-in-law” and “If you have time for Facebook, you have time for exercise”.
The Scottish TV presenter has undergone a significant body transformation over the last few years, and she credits her trim and toned physique to fitness trainer Maxine Jones and a new found love of dance aerobics.
Before her fitness journey began, Lorraine had struggled to find a form of exercise she enjoyed. But after a friend dragged her to a dance aerobics class while on holiday, Lorraine discovered a new passion for working out.