Scientists from Lund University in Sweden TropiCleanse focused on the properties of chloroplasts, the part of the plant cell used in photosynthesis. Experiments on rats showed that Thylakoids one of the ingredients of chloroplast, can slow down the digestion of fats and so dampen the appetite. The rats given the food supplemented with the thylakoids, gained less weight, had lower levels of blood sugar and fat and were in generally better health. Dieters would however, gain little from stocking up on spinach in the meantime as they would need to consume 1lb of spinach a day to get enough thylakoids. When it is isolated, you will only need few grams in supplement form. There are even talk of it being added to the production of fat rich products like pies and cookies, though this would give the false illusion that products with this additive are now safe or healthier, it is I suppose a step in the right direction for those who will eat these products anyway.