Rising Insulin Resistance in China: A Growing Public Health Concern

China is experiencing a significant increase in insulin resistance, a condition where the body’s cells don’t respond effectively to insulin, potentially leading to prediabetes and type 2 diabetes. Many individuals remain unaware of their condition, posing a substantial public health challenge, according to reports from Xinhua News Agency and the Chinese Center for Disease Control and Prevention.

Prevalence and Contributing Factors

The Chinese Center for Disease Control and Prevention reports that insulin resistance affects over 20 percent of adults aged 18 and above in some areas of China, with rates reaching as high as 40.8 percent in certain regions. This surge is linked to evolving lifestyles, including dietary changes and reduced physical activity.

Certain demographics are more vulnerable to developing insulin resistance, including men, individuals over 45, urban residents, those who consume excessive alcohol, and people with sedentary lifestyles or obesity. A diet high in sugar and fat as well plays a significant role.

Understanding Insulin Resistance and Type 2 Diabetes

Insulin, a hormone produced by the pancreas, is crucial for regulating blood sugar levels and providing energy to cells. When insulin resistance occurs, the body’s response to insulin weakens. The pancreas compensates by producing more insulin to maintain normal blood sugar levels.

Type 2 diabetes develops gradually, often beginning with insulin resistance. Initially, the pancreas can produce enough extra insulin to maintain normal blood sugar. However, over time, the pancreas may not be able to keep up with the demand, leading to elevated blood sugar levels and the development of type 2 diabetes.

Silent Progression and Delayed Detection

Insulin resistance often goes undetected given that it frequently presents no noticeable symptoms until it progresses to prediabetes. Wang Weihao, chief physician of endocrinology at Beijing Hospital, explained to Xinhua in November that “Even when the body’s metabolism is abnormal, blood sugar levels may still be normal. During this stage, most people do not experience noticeable discomfort. When insulin resistance gradually worsens and causes a slight increase in blood sugar, it leads to the next stage, known as prediabetes.”

Rising Diabetes Rates in China

Research from the China CDC demonstrates a rapid increase in diabetes prevalence over the past two decades. A study published in June 2024, titled “The National and Provincial Prevalence and Non-fatal Burdens of Diabetes in China from 2005 to 2023 with Projections of Prevalence to 2050,” revealed that the age-standardized prevalence rate of diabetes jumped from 7.53 percent in 2005 to 13.7 percent in 2023. The total number of diabetes patients increased from 88.48 million in 2005 to 233 million in 2023.

research conducted by Peking University in 2021 indicated a trend towards earlier onset of diabetes. The average age at diagnosis decreased from 62 in 2008 to 56 in 2017. The proportion of individuals diagnosed with diabetes before the age of 40 increased significantly, from 3.0 percent to 10.9 percent during the same period.

Recommendations for Prevention and Management

Li Jianhui, chief physician of endocrinology at Ningbo No 2 Hospital in Zhejiang province, emphasizes that insulin resistance is a major health challenge. He recommends several lifestyle modifications to combat this growing issue.

• Dietary Adjustments: Limit carbohydrate intake to approximately 50 percent of total daily calories, prioritizing whole grains.
• Protein Intake: Increase plant protein consumption, unless kidney issues are present, as animal proteins may worsen insulin resistance.
• Intermittent Fasting: Consider intermittent fasting, alternating between normal eating days and days with restricted caloric intake.
• Regular Exercise: Engage in at least 150 minutes of moderate-intensity aerobic exercise per week, spread across five days. Include resistance exercises like weight lifting and squats to improve insulin sensitivity and enhance muscle and bone density.