10 South Korea-ThinkstockPhotos-530986008.jpg

Thinkstock

Rapid increases in life expectancy in South Korea were mostly achieved by reductions in infant mortality and in diseases related to infections and blood pressure, according to a study. Healthy diet, which is high in carbs and low in fat, has helped as well. Locals eat a lot of rice, kimchi, soup, vegetables, and roasted meat or fish.