Actually all those diets work, at least in the short term, but that is the situation you do not want to be in: going on and off of diets.
If health is a priority, this should not be your plan since your body needs a whole range of different nutrients on a daily basis, each of them having a unique and specific function.
To survive in the confusion jungle, you have to arm yourself with scientific information. From there common sense should guide you all the way along.