Diets through the decades1960s: Weight Watchers
Now the world's largest commercial weight-loss programme, its core message remains the same: "Move more, eat less."
The programme sees members monitor their daily intake by counting points in conjunction with weekly support meetings and weigh-ins.
1970s: The Scarsdale diet
The 14-day calorie-controlled diet was created by Dr Herman Tarnower.
Its specific ratios of 43pc protein, 22.5pc fat and 34.5pc carbohydrate saw women consume between 650 and 1000 calories per day. Thanks to promotion in Vogue it became one of the best-selling diet books of the 1970s.
1980s: Slim Fast
Appetite for the shakes took off in the 1980s after Oprah (left) announced she'd lost 50lbs on the plan.
The concept: a Slim Fast shake for breakfast and lunch followed by a sensible dinner. The brand now has a more flexible approach and has been shown to be successful for achieving long-term weight loss.
Dr Atkins spawned thousands of devotees with the re-release of his Diet Revolution tome that told us we could slim down by cutting carbs and loading up on steak and sour cream.
The biggest diet of the new millennium was Dukan, created by Dr Pierre Dukan, that saw fans, like Kate's mum Carole Middleton (left), shift weight by slashing carbs, upping protein and chowing down oatbran.– CR