The induction phase of the Atkins Diet is a low-carbohydrate, high-protein, moderate-fat diet. The Atkins Diet program lists specific low-carbohydrate foods that are allowed during the induction phase of the program. Dieters are not allowed to eat anything that is not on the approved food list.
During the Induction phase, dieters must consume 20 or less grams of carbohydrates. This causes the body to go into ketosis and start fueling itself on fat instead of carbohydrates.
During the Induction phase, some dieters report symptoms of fatigue, headaches, nausea and sore muscles. However, the Atkins Diet's Induction phase is followed by rapid weight loss.
While the induction phase of the Atkins Diet usually lasts for no more than two weeks, the Atkins Diet website does state that participants can add nuts and seeds to the approved list if the induction phase is followed for longer than two weeks. At the end of this phase, dieters move on to a phase that slowly reintroduces foods forbidden during the induction phase.