By Ian Werther in News — 14 Mar 2026

South Korea's Diabetes Prevalence at 16.3% Tied to Refined Carbs

In South Korea, new health data highlight a significant metabolic challenge: about one in six adults aged 30 and older are dealing with diabetes or impaired blood sugar control. The 2023 National Health and Nutrition Examination Survey shows diabetes prevalence at roughly 16.3%, underscoring how common elevated blood sugar is in daily life. Analysts point to sugary snacks and drinks as important contributing factors.

The pancreas plays a central role in managing blood sugar. When refined carbohydrates are eaten frequently, the body must churn out insulin more often to keep glucose in check. Over time, this can lead to insulin resistance, where the body's cells respond less effectively to insulin, leaving glucose circulating in the blood rather than entering cells for energy.

BACKGROUND:
The 2018 Dietary Guidelines for Americans is the cornerstone of federal nutrition policy in the United States. The Food Guidance System provides a guide that helps implement the recommendations of the Food Guidelines. The System is based on the Guidelines and Reference Diet Intake of the National Academy of Sciences, and takes into account the current consumption patterns of Americans. The System translates the Guidelines into a TOTAL diet that meets the needs of nutrients with food sources and seeks to moderate or limit the components of the diet that are often consumed in excess.
MyPyramid provides specific recommendations for making food choices that will improve the quality of an average American diet. These recommendations are interrelated and should be used together. As a whole, they generate the following changes in a typical diet:
Increased consumption of vitamins, minerals, dietary fiber, and other essential nutrients, especially those that are generally scarce in typical diets.
Lower consumption of saturated fat, trans fat, and cholesterol and a higher consumption of fruits, vegetables, and whole grains to reduce the risk of certain chronic diseases.

Calorie intake balanced with energy needs to avoid weight gain and / or promote a healthy weight. — Representative image for context; not directly related to the specific event in this article. License: CC BY-SA 4.0. Source: Wikimedia Commons.

Pancreatic cancer compounds concerns because its five-year relative survival rate is about 17%, one of the lower figures among common cancers. Early symptoms are often subtle, so the disease can progress before detection. Experts note that obesity, smoking, diabetes, and chronic pancreatitis, along with long-standing metabolic disturbances, are risk factors that can intersect with a high-sugar, refined-carbohydrate diet.

Korean dietary patterns described in the report emphasize ready-to-eat foods, processed snacks, white rice, and other refined carbohydrates that can trigger sharp blood sugar rises. Even a single kimbap roll or a cup of mixed coffee-and-sweets can contribute to higher carbohydrate intake, depending on ingredients. Liquid sugars, such as those in fruit juices, are noted to be absorbed quickly, placing additional demand on the pancreas.

Health experts warn that repeated rapid spikes in blood sugar and subsequent drops raise the risk of insulin resistance and unwanted weight gain. They emphasize that managing sugar intake is not about drastic restrictions but about sustainable changes in daily habits, including how meals are composed and consumed.

Electron micrograph of red blood cells infected with Plasmodium falciparum, the parasite that causes malaria in humans. During its development, the parasite forms protrusions called 'knobs' on the surface of its host red blood cell which enable it to avoid destruction and cause inflammation. Using scanning electron microscopy, this image shows a knob-rich infected blood cell surrounded by knobless uninfected blood cells. — Representative image for context; not directly related to the specific event in this article. License: Public domain. Source: Wikimedia Commons.

One practical approach is changing the order of eating: starting meals with vegetables and protein before carbohydrates can slow glucose absorption, thanks to dietary fiber and the slower digestion of nutrients. Such small adjustments can help moderate blood sugar rises and support longer-term metabolic health.

For individuals outside Korea, the message has broad relevance. Globally, rising rates of type 2 diabetes and obesity are driving health-care costs and shaping nutrition policy, food production, and consumer choices. Simple daily actions—choosing water over sugary drinks at convenience stores and taking a short walk after meals—can influence long-term markers like HbA1c and weight, with potential implications for health systems and markets in the United States and beyond.

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