I often see elderly glucose patients say that they feel “weak” or “their blood sugar is fine, but they just don’t have any energy” lately. What is the reason for this? Generally speaking, when blood glucose is particularly high, there will be a feeling of weakness, and when blood glucose is consistently low, there will also be fatigue and weakness. However, there are some people whose blood glucose monitoring is not low or high, but they still have no energy. It may be because the body does not adapt to this blood glucose value, and it is time to consider relaxing the blood glucose standard appropriately, especially for elderly sugar lovers. For example, the blood glucose standard before meal is 5-7, and the blood glucose value two hours after meal is ideally less than 8 and preferably not more than 10. In fact, sometimes 12 or less is also possible. Because the older the patient is, the higher the blood glucose concentration to maintain comfort. The blood vessels of the elderly may become less and less open, the degree of hardening of blood vessels increases, and the ability of nutrients in the blood to pass through the blood vessels and reach the tissues to supply energy decreases, so if the body does not get sugar, of course, there will be weakness and lack of energy. The older a person is, the more it is generally advocated that the blood sugar standard should be appropriately relaxed. Including fasting, and for people over 70 years old, the postprandial blood sugar can be relaxed to 10-12, and occasionally a little higher in individual cases, without forcing to strengthen the standard.