Professor Li Guangwei: Prediabetes and Type 2 Diabetes Prevention Specialist
Professor Li Guangwei is a senior endocrinologist and professor associated with China-Japan Friendship Hospital in Beijing. He is internationally known for long-term research on the prevention of type 2 diabetes and its cardiovascular consequences.
His work is closely associated with the Da Qing Diabetes Prevention Study, one of the world’s longest-running investigations of lifestyle intervention in people with impaired glucose tolerance.
For an overview of the hospital, see our China-Japan Friendship Hospital international patient guide. Patients needing broader diabetes treatment and complication management can also read our profile of Professor Yang Wenying.
Clinical and Academic Focus
Professor Li’s principal areas include:
- prediabetes and impaired glucose tolerance;
- prevention of type 2 diabetes;
- lifestyle intervention;
- insulin resistance and metabolic risk;
- early type 2 diabetes;
- long-term cardiovascular risk reduction;
- population-based diabetes prevention; and
- second opinions on high-risk metabolic conditions.
Prediabetes and Impaired Glucose Tolerance
Prediabetes means blood glucose is higher than normal but does not meet diagnostic criteria for diabetes. Impaired glucose tolerance is usually identified through an oral glucose tolerance test showing an elevated two-hour glucose level.
Prediabetes is not a harmless borderline state. It is associated with an increased risk of type 2 diabetes and cardiovascular disease, but progression is not inevitable.
Assessment should confirm the glucose abnormality and consider age, weight, waist size, family history, blood pressure, cholesterol, fatty liver disease, sleep, physical activity, medicines, and previous gestational diabetes.
The Da Qing Diabetes Prevention Study
The Da Qing Diabetes Prevention Study began in China in the 1980s and enrolled adults with impaired glucose tolerance. Participants received dietary intervention, exercise intervention, a combination of both, or standard care.
The initial study showed that structured lifestyle intervention could substantially reduce progression to type 2 diabetes. Long-term follow-up later reported benefits extending beyond the intervention period, including delayed diabetes onset and reductions in some cardiovascular and mortality outcomes.
Professor Li has played a central role in the study and its long-term follow-up, helping establish diabetes prevention as a practical clinical and public-health goal.
Lifestyle Intervention
Effective lifestyle intervention is more than general advice to eat less and exercise more. It should set realistic, measurable goals based on the patient’s health, mobility, culture, daily schedule, and starting risk.
A prevention plan may include:
- gradual weight loss when appropriate;
- regular aerobic and resistance activity;
- reduced intake of refined carbohydrates and excess calories;
- adequate protein, vegetables, and dietary fiber;
- better sleep and treatment of sleep apnea;
- reduced sedentary time;
- smoking cessation; and
- regular glucose, blood-pressure, and lipid monitoring.
Small, sustainable changes maintained over years are generally more valuable than short, extreme programs.
Weight and Insulin Resistance
Excess abdominal fat can increase insulin resistance, but diabetes risk is not determined by body weight alone. Some people develop diabetes at a lower body mass index because of genetics, body-fat distribution, reduced insulin secretion, or other factors.
Weight goals should therefore be individualized. A patient may improve glucose and cardiovascular risk through better fitness, nutrition, sleep, and medication even if weight loss is modest.
Medication for Diabetes Prevention
Lifestyle intervention remains the foundation of diabetes prevention. Medication may be considered for selected high-risk patients, such as those with rising glucose, obesity, previous gestational diabetes, or several metabolic risk factors.
The decision should consider potential benefit, side effects, kidney and liver function, pregnancy plans, long-term adherence, and cost. Medication does not remove the need for lifestyle change and monitoring.
Cardiovascular Risk
People with prediabetes may already have high blood pressure, abnormal cholesterol, fatty liver disease, smoking exposure, or early vascular disease. Prevention should address these risks rather than focusing only on blood glucose.
Depending on the patient, treatment may include blood-pressure control, cholesterol-lowering therapy, weight management, smoking cessation, and evaluation for sleep apnea or cardiovascular symptoms.
Who May Consider a Consultation?
A consultation with Professor Li or the China-Japan Friendship Hospital endocrinology team may be worth considering when a patient:
- has impaired glucose tolerance or prediabetes;
- has a strong family history of type 2 diabetes;
- had gestational diabetes;
- has obesity, fatty liver, high blood pressure, or abnormal cholesterol;
- has glucose levels that continue to rise despite lifestyle changes;
- needs an individualized diabetes-prevention plan;
- wants to understand whether preventive medication is appropriate; or
- needs a second opinion on long-term metabolic risk.
Medical Records to Prepare
International patients should prepare:
- a concise medical summary and family history;
- fasting glucose, two-hour oral glucose tolerance, and HbA1c results over time;
- weight, waist circumference, and blood-pressure trends;
- cholesterol, triglyceride, liver-function, and kidney-function results;
- liver ultrasound or other fatty-liver assessment;
- pregnancy and gestational-diabetes history when relevant;
- current diet, physical activity, sleep, smoking, and alcohol information;
- a list of medicines that may affect glucose or weight;
- previous lifestyle or weight-management program results; and
- a clear list of goals and questions.
A short food and activity diary can help the specialist recommend changes that fit the patient’s actual routine.
Planning an International Consultation
Stable patients seeking a second opinion should confirm whether records can be reviewed and whether repeat glucose testing is required.
Remote medical-record review is subject to physician authorization. Prevention recommendations should be adapted to the patient’s local food environment, physical abilities, medical conditions, and access to follow-up.
How CMCS Can Assist
CMCS – China Medical Concierge Shanghai is an independent medical concierge and health management company, not a hospital. We assist international patients with organizing and translating metabolic records, identifying an appropriate specialist, requesting appointment availability, arranging interpretation, and planning medical travel in China.
Access to Professor Li, remote review, testing, or any particular program is subject to the doctor’s and hospital’s approval. CMCS does not guarantee appointments, treatment eligibility, prevention of diabetes, or clinical outcomes.
For assistance, contact CMCS:
- Email: contract@medicalsh.com
- WhatsApp: Contact us on WhatsApp
- Website: www.medicalsh.com
Important Note
Doctor titles, clinical roles, testing, program availability, and appointment arrangements may change. Patients should confirm current information before travel. This profile is based on publicly available hospital and academic sources and is provided for general information only. It is not individual medical advice and does not replace assessment by a qualified endocrinologist.
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