[Dietary cholesterol intake status and the correlation analysis with serum cholesterol level of the residents aged 60 and above in 15 provinces (autonomous regions and municipality) of China in 2015].

OBJECTIVE

To understand the dietary cholesterol intake status of elderly residents in 15 provinces(autonomous regions and municipality) of China, and to analyze the relationship between dietary cholesterol intake status and blood cholesterol level.

METHODS

Using data from "China Nutritional Transition Cohort Survey" in 2015 on the subjects aged 60 and above in 15 provinces(autonomous regions and municipality) in China with complete 24-hour-dietary for 3 days method, the differences in dietary cholesterol intake of different genders, urban and rural areas, age, education, income and body mass index were analyzed by means of variance analysis. Chi-square test was used to analyze the distribution of different dietary cholesterol levels. The relationship between dietary cholesterol intake and blood cholesterol(TC), low density lipoprotein cholesterol(LDL-C) and high density lipoprotein cholesterol(HDL-C) was analyzed by multiple linear regression analysis. Multivariate Logistic regression was used to analyze the risk of different dietary cholesterol intake levels with blood cholesterol edge elevation and hypercholesterolemia.

RESULTS

The average dietary cholesterol intake of the 4698 elderly residents over 60 years old in 15 provinces(autonomous regions and municipality) of China in 2015 was 223. 1 mg/d, which was higher for men than for women, higher for cities than for rural areas, and higher with the increase of education and income level. The proportion of the elderly residents who consumed more than 300 mg/d daily dietary cholesterol was 28. 0%. Eggs and red meat were the main food sources of dietary cholesterol for elderly residents, accounting for 53. 8% and 26. 0% of the total intake respectively. For every 100 mg increase in cholesterol intake in elderly residents, there were 0. 0409 mmol/L of TC and 0. 0280 mmol/L of LDL-C increase. Elderly residents whose dietary cholesterol intake was higher than 300 mg/d had 1. 320 times higher risk of elevated blood cholesterol margins and 1. 332 times higher risk of hypercholesterolemia than elderly residents whose dietary cholesterol intake was lower than 300 mg/d.

CONCLUSION

The dietary cholesterol intake of elderly residents in 15 provinces(autonomous regions and municipality) of China is higher for men than that for women, and is positively correlated with the economic and cultural levels. Eggs and red meat are the main food sources of dietary cholesterol for elderly residents. The dietary cholesterol intake of elderly residents is positively correlated with TC and LDL-C. High dietary cholesterol in older residents increases the risk of elevated blood cholesterol margins and hypercholesterolemia.