What is it?
This high protein moderate carb diet aims to regulate insulin and and blood sugar levels and burn fat. Each meal must contain exactly 40 per cent carbs, 30 per cent protein and 30 per cent fat - confusing!

Who does it?
Jennifer Aniston and Sandra Bullock

Good Points
Weight loss is fast and lean red meat, turkey, fish, low-fat dairy, low GI carbs and good fats are encouraged.

Bad Points
It's low in fibre and high in fat.

Hassle Factor
A lot! Getting the exact food balance is very tricky and eating out is a nightmare. But celebrities have their meals delivered to the door, or have a chef who makes the diet a cinch for them to follow.

Verdict
OK. By allowing low GI carbs it's more balanced than Atkins.

For meal plans and recipes visit www.drsears.com