The cross-sectional relationship between dietary calcium intake and metabolic syndrome among men and women aged 40 or older in rural areas of Korea

BACKGROUND/OBJECTIVES: Studies conducted in Western populations have suggested that dietary calcium may protect against metabolic abnormalities, but there is little evidence of this effect in Asians, who have relatively low calcium intake. We evaluated the cross-sectional relationship between dietary calcium and metabolic syndrome among Korean men and women aged 40 years and over. SUBJECTS/METHODS: A total of 6,375 subjects aged 40 years and over and were recruited between January 2005 and February 2010 from the baseline study of the Multi-Rural Communities Cohort Study in Rural Communities (MRCohort). A food frequency questionnaire was used to collect dietary information. Metabolic syndrome was defined using the modified criteria published in the Third Report of the National Cholesterol Education Program Adult Treatment Panel. RESULTS: Calcium intake was related inversely to metabolic syndrome in women (P-value = 0.0091), but not in men (P = 0.1842). Among metabolic components, high waist circumference (WC) (P = 0.0426) and high blood glucose (P = 0.0027) in women and hypertriglyceridemia (P = 0.0017) in men were inversely correlated with calcium intake. Excluding those who used calcium or multinutrient supplements did not attenuate the relationship between dietary calcium and metabolic abnormalities. CONCLUSION: Dietary calcium intake from foods may be inversely related to metabolic syndrome, WC, and blood glucose among women in rural areas of Korea.

A comparison of food frequency for the elderly regarding different family types: Based on Community Health Survey for 2008

This study analyzes the food frequency for the elderly regarding different family types and finds the factors for nutritional risk, offers a basic reference for providing nutritional support for them. The study referred to the dietary behavioral survey data of 3,680 elderly people (1652 male and 2028 female) from 21 regions in the northern Kyeonggi province. The data was collected through the method of one-to-one interviews and was a part of the Community Health Survey for 2008 by the Korea Centers for Disease Control and Prevention (KCDC). We classified family types as a household for elderly people living alone, a household of elderly people with a spouse, a household of the elderly with unmarried children and a household of the elderly with married children, and as for intakes of foods, the frequencies of taking fruits, vegetables, kimchi, rice with mixed cereals, meat, fish, bean/tofu/soymilk, milk and dairy products, as well as sweet beverages are calculated on a daily basis and skipped meals are calculated on a weekly basis. Elderly women showed lower income, lower education level, higher unemployment rates, and a higher rate of government healthcare subsidies than elderly men. Elderly women tend to live alone and with their children while elderly men tend to live with their spouse. In both males and females, the intake of fruits and vegetables were the least in the elderly living alone, while the elderly with married children ate the most. In both males and females, the household of the elderly living alone ate significantly less amounts of Kimchi than other family types. Elderly people living alone tended to have significantly less meat and fish, especially women. In the case of rice with mixed cereals, the elderly men living alone and the elderly men with unmarried children ate significantly less amounts than the elderly men living with a spouse. The elderly men living alone took significantly less milk and dairy products than the elderly men with unmarried children while the elderly women living with a spouse took significantly less milk and dairy products than the elderly women with married children. With regards to the frequency of meal-skipping, the elderly living alone had the highest frequency for skipping meals. From this result, having various foods is difficult for the elderly living alone. Furthermore, the elderly living with unmarried children demonstrated a low quality of dietary life compared to those of married children. Hence, it can be concluded that social support is important in order for the elderly to have a balanced diet.