A good book on this small alga that gives hydration, a jelly that calm hunger and laxative. The Doctor recommends Valnet por obesity to take one spoonful before meals. It can be prepared in salty or sweet meal. But the book offers a diet of this alga diet. I use the kitchen instead of the gelatin to thicken dishes, or as an ingredient to prepare aspic thicken or cream. That is why I Bought the book. But for me there is only one way to lose weight and that is change his eating habits and move. The book brings me new recipes of a product that I find palatable and which I do not believe, because I use a product occasionnellement.C'est if one abused may disrupt the gut , producing diarrhea. From this point of view the book is useful, and I use it to find from time to time a new recipe