A study published in the British journal Lancet shows that the number of people suffering from diabetes went from 153 million in 1980 to 353 million in 2008. The study shows the U.S. having 24.7 millon diabetics in 2008, which is three times the number from 1980. About 70% of this is from population growth and aging, and the rest from obesity, lack of exercize, changing diet. The American Diabetes Association estimated the cost of treating diabetes in the U.S. at $174 billion for 2007. About 138 million diabetics live in China and India. In India there is an additional cause- malnutrition in early childhood years for the poorer segment of the population. European countries have done better than the U.S., Mexico, India and China. S. Korea and Thailand have done better than other Asian countries. And this is attributed to healthier lifestyles, diet and less obesity in these countries.