07/28/2026
【Diabetes: From Islet Regulation and Prevention to Emergency Recognition】
Diabetes is not simply caused by “eating too much sugar.” At its core, it involves a disruption of the body’s blood glucose regulatory system.
The pancreatic islets contain several types of endocrine cells. Beta cells produce insulin, which helps cells use glucose and lowers elevated blood glucose. Alpha cells produce glucagon, which signals the liver to release glucose when blood glucose falls. Together, these hormones help maintain glucose stability. In diabetes, this system may be disrupted by insufficient insulin production, reduced insulin action, or both.Sources: U.S. National Institute of Diabetes and Digestive and Kidney Diseases and a Nature Reviews Endocrinology review of glucagon.
1.Type 2 diabetes is not always inevitable
The World Health Organization states that a healthy diet, regular physical activity, maintaining an appropriate body weight and avoiding to***co can help prevent or delay type 2 diabetes. WHO diabetes fact sheet
The American Diabetes Association’s Standards of Care in Diabetes—2026 further recommends that adults with overweight or obesity who are at high risk of type 2 diabetes be referred to a structured prevention program. Goals may include at least 150 minutes of moderate-intensity activity per week and, when appropriate, achieving and maintaining a reduction of approximately 5%–7% of initial body weight. This means individualized, sustainable lifestyle management—not extreme dieting or stopping medicines without medical advice.Source: ADA Standards of Care in Diabetes—2026: Prevention or Delay of Diabetes
This recommendation is supported by randomized clinical research. The U.S. Diabetes Prevention Program enrolled 3,234 adults at high risk of diabetes. Over an average follow-up of 2.8 years, the incidence of type 2 diabetes was 58% lower in the structured lifestyle-intervention group than in the placebo group. This relative reduction applies to the high-risk population studied and does not mean everyone who loses weight will experience exactly the same risk reduction.Original paper: Diabetes Prevention Program Research Group, NEJM, 2002
During 15 years of follow-up, diabetes incidence remained 27% lower in the original lifestyle-intervention group than in the original placebo group over the entire study period. This reinforces the importance of sustained—not merely short-term—change.Long-term study: DPP Outcomes Study, The Lancet Diabetes & Endocrinology, 2015
2.After diagnosis, management involves more than one glucose number
The ADA recommends a comprehensive assessment followed by an individualized plan developed jointly by the person with diabetes and the healthcare team. This may include:
✅ Confirming the diabetes type and possible cause✅ Establishing individualized glucose and metabolic targets✅ Receiving diabetes self-management education and nutrition support✅ Using medicines safely and avoiding unadvised dose changes✅ Monitoring glucose, blood pressure, lipids and hypoglycemia risk✅ Screening the eyes, kidneys, nerves, feet and cardiovascular system according to diabetes type, duration and individual risk✅ Addressing sleep, mental health, oral health and to***co cessation
Targets should reflect the person’s age, diabetes type, medicines, complications, pregnancy status and hypoglycemia risk. Another person’s glucose target should not automatically be adopted as your own.Sources: ADA Standards of Care in Diabetes—2026: Comprehensive Medical Evaluation and ADA 2026: Retinopathy, Neuropathy and Foot Care.
3.Hypoglycemia: remember “70” and the “15–15 rule”
The ADA and U.S. CDC identify blood glucose below 70 mg/dL (3.9 mmol/L) as an important threshold requiring prompt action.
If the person is alert and can swallow safely:
1.Take approximately 15 grams of fast-acting glucose or carbohydrate.
2.Wait 15 minutes and recheck.
3.If glucose remains below 70 mg/dL, repeat the treatment and recheck.
Chocolate and foods high in fat or protein are absorbed more slowly and are generally not the preferred initial treatment. Children may need less than 15 grams, according to an individualized plan from their healthcare team.Sources: ADA Standards of Care in Diabetes—2026: Hypoglycemia and CDC hypoglycemia guidance.
If the person is confused, having a seizure, unconscious or unable to swallow:
🚫 Do not give food, drinks or sugar by mouth because of the risk of choking.
💉 If prescribed glucagon is available and someone has been trained to use it, administer it as directed.
📞 Contact local emergency services immediately.
ADA 2026 recommends discussing a glucagon prescription for anyone using insulin or at high risk of hypoglycemia. Family members and caregivers should know where it is stored and how to administer it. ADA 2026 glucagon recommendation
Diabetic ketoacidosis: glucose may not be extremely high
Diabetic ketoacidosis is a potentially life-threatening emergency. Warning signs include:
🚨 Elevated blood or urine ketones
🚨 Persistent nausea, vomiting or abdominal pain
🚨 Deep or rapid breathing
🚨 Fruity or acetone-like breath
🚨 Marked thirst, dehydration, drowsiness or confusion
The 2024 international consensus report on hyperglycemic crises notes that approximately 10% of adults presenting with DKA may have euglycemic DKA—defined by glucose below 200 mg/dL (11.1 mmol/L) together with ketosis and metabolic acidosis. DKA therefore cannot be excluded simply because glucose is “not very high.” High ketones accompanied by these symptoms require immediate emergency evaluation, not observation at home.
Consensus paper: Hyperglycemic Crises in Adults With Diabetes, Diabetes Care, 2024
Prevention begins with daily habits, management requires an individualized medical plan, and safety depends on recognizing hypoglycemia and DKA early.
Please share this post with family members and caregivers. Accurate knowledge may save a life at a critical moment.
This post is for health education and does not replace medical diagnosis, prescriptions or individualized treatment.
