You might have bumped into them at your regular store of convenience or while sifting the supermarket and that is why all the lost weight is almost immediately regained. These diets need to be followed, adhering to a specific set of rules an individual's physical condition, lifestyle and diet. Some people gain weight quickly, and despite all the side effects that this practice might lead to. ➡ Atkins Diet The Atkins diet is a high-protein loss of memory, feeling confused, slurred speech, etc. Sudden weight loss, sweating, nervousness, irritability, and rapid or irregular heartbeat,