Contemporary health trends

According to the United Nations Food and Agriculture Organization estimates for 2001–2003, 12% of the population of the People’s Republic of China was undernourished. The number of undernourished people in the country has fallen from 386.6 million in 1969–1971 to 150.0 million in 2001–2003.

Undernourishment is a problem mainly in the central and western part of the country, while "unbalanced nutrition" is a problem in developed coastal and urban areas. Decades of food shortages and rationing ended in the 1980s. A study in 2004 showed that fat intake among urban dwellers had grown to 38.4 percent, beyond the 30 per cent limit set by the World Health Organization. Excessive consumption of fats and animal protein has made chronic diseases more prevalent. As of 2008, 22.8 percent of the population were overweight and 18.8 percent had high blood pressure. The number of diabetes cases in China is the highest in the world. In 1959, the incidence of high blood pressure was only 5.9 percent.

A typical Chinese peasant before industrialization would have eaten meat rarely and most meals would have consisted of rice accompanied with green vegetables, with protein coming from foods like peanuts. Fats and sugar were luxuries not eaten on a regular basis by most of the population. With increasing wealth, Chinese diets have become richer with more meats, fats, and sugar being consumed.

Health advocates put some of the blame on the increased popularity of Western foods, especially fast food, and other culinary products and habits. Many Western, especially American, fast food chains have appeared in China, and are highly successful economically. These include McDonald's and Kentucky Fried Chicken (KFC).

An extensive epidemiological study called the China Project is being conducted to observe the relationship of disease patterns to diet, particularly the move from the traditional Chinese diet to one which incorporates more rich Western-style foods. Controversially, Professor T. Colin Campbell has implicated the increased consumption of animal protein in particular as having a strong correlation with cancer, diabetes, heart disease, and other diseases that, while common in Western countries, were considered rare in China. He suggests that even a small increase in the consumption of animal protein can dramatically raise the risk of the aforementioned diseases.