I don't think so.
The best way to loose weight safely is to just cut out fatty foods, and things you dont REALLY need such a crisps, chocolates etc.
I lost 5 lbs in one week eating cerial for breakfast with semi or skimmed milk…cerial such a weetabix (as this helps digestion) with fruit such a grapes (not bananna as this is hig in carbs)…for lunch, brown break with sliced white meat or ham woth plenty of salad and water to drink with some fruit.
then for dinner, steamed fish/chicked with salad or veg..try and cut out big amounts of potato, but if you do have potatio have a jacket spud.
no sauces such as mayonnaise etc…
drink plenty of water..and dont snack of crips & choccie….snack on fruit, rice crackers or low fat yoghurt. that was 5 lbs on one week, without excersie! imagine how much more i could have lost in that week with some gentle excersice!!!!!
hope this helps.