Can fruity smelling breath be a sign of hyperglycemia?

Fruity smelling breath can indeed be a sign of hyperglycemia, particularly in the context of diabetic ketoacidosis (DKA), which occurs when the body has insufficient insulin. In DKA, the body begins to break down fat for energy, leading to the production of ketones. These ketones can create a distinct fruity odor, often described as reminiscent of nail polish remover or overripe fruit. Therefore, when a person presents with fruity-smelling breath, it may indicate that they are experiencing hyperglycemia or a related metabolic complication.

This symptom acts as an important clinical indicator for healthcare professionals to assess blood glucose levels and consider the possibility of DKA, which requires immediate attention and treatment. Recognizing this sign can be critical in preventing further complications associated with uncontrolled diabetes.