Nutritional ketosis is characterized by a controlled increase in ketones, along with reductions in blood glucose and normal blood pH. Ketoacidosis is characterized by the uncontrolled increase in ketone production (higher than 15 mmol) despite elevated blood glucose levels and results in dangerous decreases in blood pH ; this is mainly a concern for type 1 diabetics. Ketogenic diets and ketone supplementation typically do not raise ketone levels past 5 to 7 mmol.