Study on 20 years’transitional trend of dietary pattern and nutrition-related chronic diseases in urban and rural residents in Guangxi

Objective To analyse the transitional trend of dietary pattern and changes of nutrition-related chronic diseases in urban and rural residents of Guangxi in 1982-2002,and put forward the strategy for improving the dietary pattern and reducing nutrition-related diseases.Methods According to the data from Guangxi nutrition survey for three times(1982,1992 and 2002),the 20 years’ transitional trend of dietary consumption and the changes of nutrition-related chronic diseases in urban and rural residents in Guangxi was evaluated reasonably by using the mathematical statistical techniques.Results The total amount of food intake during 20 years in residents of Guangxi increased by 0.8% year by year.Except the cereals and tubers decreased by 1% per year,other food consumption occurred the increased trends.In the urban residents,the foods which had the fastest average annual increase rates were milk and dairy product(14.5%),fruits(9.1%),eggs(7.8%),aquatic produts(6.6%),meat and poultry(5.7%);the amount of meat and poultry intake exceed recommended amount of standard man to 112.7% in 1992,and 166.0% in 2002,respectively.In the rural residents,the first five foods which had the fastest average annual increase rates were milk and dairy products(20.3%),eggs(9.9%),meat and poultry(9.3%),aquatic products(5.3%) and fruits(5.3%).The meat and poultry intake rapidly increased from severe negative deviation in 1982 to severe positive deviation,and exceeded recommended amount of standard man to 80.1% in 2002.The salt intake in urban and rural residents during 20 years was always in positive deviation.The proportion of energy from fat reached 31.3% in 2002.Malnutrition decreased and overnutrtion-related chronicn on-communicable diseases increased year by year.Spearman rank correlation analysis showed that the prevalence of hypertension,overweight and obesity was negatively correlated with the intake of cereals and tubers,and positively correlated with the intake of meat and poultry,cooking oil,eggs.Malnutrition and anemia were positively correlated with the intake of cereals and tubers,and negatively correlated with the intake of meat and poultry,eggs,cooking oil.Conclusion The dietary pattern of residents in Guangxi has already entered into the quick transitional stage,with a trend from low fat diet to high fat diet.It is urgent need for residents to improve and intervent the dietary pattern,so as to effectively control the prevalence of nutrition-related chronic diseases.