In case of fasting, glycogen stores in the body can last up to:: (A) 7 days, (B) 72-96 hours, (C) 6-8 hours, (D) 12-18 hours
Answer is D. Liver glycogen is the first-line of defence against hypoglycemia. The liver concentration of glycogen is about 450 mmol /L glucose equivalents after a meal, falling to about 200 mmol /L after an overnight fast. After 12 to 18 hours of fasting, liver glycogen is almost totally depleted.