Hi Ellie,

Great question.

In short, there isn't much research out there to support whether or not "negative calorie" foods really exist. You have to remember that all our metabolisms are different so it is very difficult to prove if such small actions as chewing and digesting a food on its own will burn more calories than the food itself, unless you could stop all other body functions and remove all other calories from food that day. However, if this was possible/true, then chewing gum would therefore be a very popular weight loss tool. Again, it is not proven.

What is for sure, is that all of the foods listed as possible "negative calorie" foods are heathy and nuticious so won't do any harm if eaten.

Most of us have heard that celory being one of these types of food, but again, solid researched proof is hard to find. I would argue that celory (and other negative calorific foodstuffs) probably promote fat/weight loss as they are all quite low calorific foods anyway. This means they won't do you any harm to eat in abundance, but will not supply large amounts of calories like bread/pasta/chocolate.

I wouldn't advise not to eating more of those types of foods (double negative, but you understand what I'm saying!) but equally I would wholeheartedly recommend that they are incorporated as part of a healthy high protein diet, as well as an all round exercise routine for best fat loss results.

We will soon be releasing our "Ration Pack" Menu/Diets, which may well be of interest, so keep checking our pages.

Thanks again for the question.

Sean