These liquid diets range from the celebrity favourite of fresh fruit and vegetable juices that promise to detox your body, to low-calorie shakes and soups.

Experts are now warning that these extreme low calorie diets come with health risks, and are unsuitable for most people.  The NHS recommends that their 800 calorie a day diet is only for the obese and those who are managing type 2 diabetes.

This diet while it is tried and tested comes with lots of support and medical supervision, while most other juice diets don’t have that.

In a comment from Aisling Pigott, of the British Dietetic Association, she says, “Juice diets appeal to people because they want a quick fix – but dieting is really hard.  There is a role for them – but it’s not one size fits all.

“It’s concerning when they are marketed at people who are a healthy weight.”

As a diet, it doesn’t provide your body with all of the nutritional balance that you need, and can leave long term side affects.  As the iron reserves in your body are used up, it can lead to anaemia in women along with muscle mass depletion.

Other less glamorous side effects can include dizziness, extreme tiredness, diarrhoea or constipation.

While you may want to lose weight quickly, this isn’t the route that many dieticians would recommend.  Weight loss is a slow and steady progress, and these quick fixes never seem to work.