Ketosis is a metabolic state in which the body produces ketones, which are produced by the liver from fatty acids when there is a shortage of glucose. It is a natural response to starvation or a very low-carbohydrate diet. Ketones can be used as an alternative source of energy for the brain and other organs.
Avoiding ketosis can be important for people with certain medical conditions, such as diabetes, as it can lead to diabetic ketoacidosis (DKA). DKA is a serious condition that can be life-threatening. Avoiding ketosis can also be important for people who are pregnant or breastfeeding, as it can lead to dehydration and other complications.