Hypoglycaemia is defined as blood glucose <4 mmol/L.

Gestational Diabetes Mellitus (GDM) is any degree of glucose intolerance first recognized in pregnancy.

Religious fasting is commonly practiced in many faith traditions. People with diabetes may choose to fast, but fasting alters normal meal timing and metabolic balance, increasing the risk of hypoglycaemia, hyperglycaemia, dehydration, and ketoacidosis.

Diabetes mellitus is a clinical syndrome characterized by persistent hyperglycemia (blood glucose values higher than the normal range) due to deficiency or diminished effectiveness of insulin.