The key facts

  • Normal fasting glucose is 3.3–6 mmol/l; lower means hypoglycemia, higher means hyperglycemia
  • The result is affected by exertion, carbohydrates, and stress: adrenaline and cortisol raise blood sugar
  • If the result is elevated, repeating the test is recommended to rule out an error

Normal fasting blood sugar and the boundaries of the range

The normal fasting blood glucose level of a healthy person ranges from 3.3 to 6 mmol/l. This was stated by Pavel Baranov, a member of the Russian Association of Endocrinologists and a dietitian, in a conversation with RIA Novosti, as reported by Gazeta.Ru. Readings below 3.3 mmol/l indicate hypoglycemia, while values above 6 mmol/l indicate hyperglycemia.

Why the result may fall outside the normal range

According to Baranov, going beyond the reference range does not always indicate a disease. Blood sugar levels can be affected by physical exertion, carbohydrate consumption, and stress: when a person is frightened or irritated, adrenaline and cortisol are produced, which contribute to higher glucose levels. Therefore, for a reliable result, the doctor recommends taking the blood test strictly on an empty stomach, avoiding stress before the test, and not consuming any food or drinks other than water.

What to do if the result is elevated

If, despite following these conditions, the glucose level turns out to be above normal, the test should be repeated to rule out a random error or a laboratory mistake, the specialist noted. The practical point of this recommendation is that a single deviation is not a diagnosis in itself — conclusions about one's health can only be drawn from repeated measurements taken under proper conditions.

Context: daily routine and chocolate

Earlier, as reported, the body's ability to maintain a regular daily routine was linked to more effective blood sugar control in type 2 diabetes. In addition, chocolate consumption was linked to lower blood sugar levels in diabetes. These publications describe observed associations and do not replace the glucose measurement recommendations given by the endocrinologist.