And how to ensure that eating an Atkins bar will not knock you out of ketosis. 1. Severe carbohydrate restriction leads to a condition known as ketosis which causes weakness, nausea, dizziness, mood swings and in severe cases, coma and death. If buying packaged foods read the labels first to check the carbohydrate content. Some foods contain surprisingly high carbohydrate levels. 3. It generally restricts…