The never ending array of diet plans, all promising to keep you fit and claiming to offer rapid and sustained weight loss, are enough to make any sane weight watcher spiral into a state of confusion and frustration. Not all diet plans, however, are as effective as they claim to be. Before you choose a diet plan that you feel is a perfect fit for your lifestyle, try to find out as much information about it as possible. The FDA has openly declared some seemingly effective diet plans as being unsafe, unhealthy and possibly even fatal. Steer clear of diet plans that sound too good to be true; such drastic weight loss results can only be achieved if there is something awry about the so-called effective diet plans.