5 Countries with the Lowest Diabetes Rates (And What They Eat)

While global diabetes rates skyrocket — now affecting over 537 million adults worldwide — some countries have remarkably low rates. What are they eating differently? The answer reveals powerful, practical lessons that anyone can apply to their own diet.

1. Japan — Diabetes Prevalence: 5.6%

Japan has one of the lowest diabetes rates among developed nations despite rice being a dietary staple. The secret lies in how the Japanese eat, not just what they eat. The traditional Japanese diet emphasizes small portions, variety, and balance. A typical meal includes fish, miso soup, pickled vegetables, tofu, and a small bowl of rice — never rice alone in large quantities.

• Hara hachi bu: The Okinawan practice of eating until 80% full, preventing overeating
• High seafood intake: Omega-3 fatty acids from fish reduce inflammation and improve insulin sensitivity
• Fermented foods daily: Miso, natto, pickled vegetables support gut health
• Green tea: Rich in catechins that improve glucose metabolism. Japanese adults drink an average of 3-5 cups daily
• Minimal processed food: Traditional meals are made from whole, fresh ingredients

2. Iceland — Diabetes Prevalence: 5.3%

This small Nordic island nation has one of the lowest diabetes rates in Europe. Iceland's traditional diet is built around fatty fish (cod, haddock, Arctic char), lamb, and dairy — particularly skyr, a thick, protein-rich fermented dairy product similar to Greek yogurt but with even more protein (17g per serving).

• Extremely high fish consumption: Icelanders eat about 90kg of fish per person annually — four times the global average
• Skyr: High-protein, low-sugar fermented dairy eaten daily
• Very low sugar consumption historically: Iceland's remote location limited access to sugar for centuries
• Active lifestyle: Walking, hiking, and swimming in geothermal pools are part of daily life

3. South Korea — Diabetes Prevalence: 6.9%

South Korea's relatively low diabetes rate is remarkable given that white rice is consumed at nearly every meal. The Korean diet's secret weapons are banchan (side dishes) and fermented foods. A typical Korean meal includes kimchi, namul (seasoned vegetables), and multiple small dishes that ensure the rice is never eaten alone or in excess.

• Kimchi at every meal: Fermented cabbage that improves gut health and has been shown to reduce insulin resistance in clinical studies
• Banchan system: Multiple small side dishes ensure vegetable variety and prevent overeating rice
• Doenjang (fermented soybean paste): Contains bioactive peptides that may improve blood sugar regulation
• Minimal dessert culture: Traditional Korean cuisine does not emphasize sugary desserts

4. Italy — Diabetes Prevalence: 5.0%

Italy is the heartland of the Mediterranean diet, consistently ranked as one of the best dietary patterns for diabetes prevention. Despite pasta being a national staple, Italians have low diabetes rates because of how they eat it: in small portions, cooked al dente (which lowers its GI by 10-15 points), and always as part of a multi-course meal that includes vegetables, olive oil, and protein.

• Olive oil as primary fat: Rich in oleic acid and polyphenols that improve insulin sensitivity
• Pasta al dente: Italians rarely overcook pasta — firm pasta has a GI of 46 vs. 64 for soft pasta
• Small pasta portions: An Italian serving is 80-100g, not the 200-300g plates common in other countries
• Legumes regularly: Beans, lentils, and chickpeas feature prominently in Italian cooking
• Leisurely meals: Eating slowly improves satiety signaling and prevents overeating

5. Chad — Diabetes Prevalence: 2.2%

Chad has one of the lowest diabetes rates in the world. While economic and food-access factors play a significant role, the traditional Chadian diet offers genuine nutritional lessons. It is centered on millet, sorghum, peanuts, okra, and dried fish — all low-GI, high-fiber foods that have sustained populations for millennia.

• Millet-based staples: Millet has a GI of 54, significantly lower than white rice (73) or white bread (75)
• High vegetable intake: Okra, leafy greens, and root vegetables are dietary staples
• Peanuts and legumes: Provide low-GI protein and healthy fats
• Minimal processed food: Most meals are prepared from whole ingredients
• Physical activity: Daily physical labor keeps insulin sensitivity high

Common Patterns Across All Five Countries

Despite different cuisines and cultures, these five countries share remarkable dietary similarities:

1. Whole foods dominate. Processed foods play a minimal role in traditional diets.
2. Fermented foods are daily staples. From kimchi to miso to skyr to pickled vegetables — these foods support the gut microbiome.
3. Carbohydrates are never eaten alone. Rice, pasta, and grains are always paired with vegetables, protein, and fat.
4. Portions are smaller. None of these cultures feature the oversized portions common in countries with high diabetes rates.
5. Sugar is not a major part of the cuisine. Desserts are occasional, not daily. Sweetened beverages are not staples.

What You Can Learn From These Cultures

You do not need to adopt an entirely new cuisine. Instead, borrow the principles: eat more fermented foods, always pair carbs with protein and fiber, reduce processed food intake, and keep portions reasonable. These simple shifts, applied to whatever cuisine you already love, can dramatically reduce your diabetes risk.