And it's the same system that Beyonce is said to have used to lose weight for her role in Dreamgirls.
At the centre of the diet is a drink containing lemon juice, cayenne pepper and maple syrup in water.
Make it with two tablespoons of freshly squeezed juice, a small pinch of pepper and two teaspoons of organic syrup in 3-500ml of filtered water.
However, many of the impressive results of the 'detox' come from followers not eating very much else besides, which we’re loathe to recommend – not least because any weight lost often goes quickly back on when normal eating is resumed.
The ingredients of the drink should help the digestive process and metabolism work more effectively: lemon juice helps you feel fuller for longer and stimulates insulin production to help balance blood sugar levels; cayenne pepper is said to have a 'thermal' effect which helps burn calories; and maple syrup contains fat-burning zinc and appetite-regulating magnesium.
So it may be a useful addition to your diet if you're cutting down but still eating healthily for long-term weight loss that will hopefully stay off.
Be aware, though, that lemon juice can cause acid erosion on your teeth, so use a straw and wait half an hour before brushing your teeth.
And if you suffer from heartburn, kidney or gall bladder problems, consult your GP.