• Korean Journal of Community Nutrition
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• v.20 no.4
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• pp.301-309
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• 2015

Objectives: While recent studies showed that coffee consumption reduced the risk of all-cause mortality, no study has examined the effect of coffee consumption on all-cause mortality related to sleep disorders. We aimed to examine whether sleep-related disorders would differently affect the association between coffee consumption and the risk of all-cause mortality among 8,075 adults aged 40 to 69 years. Methods: In a prospective cohort study, the study participants were biennially followed up for 12 years from 2001 to 2012. On each follow-up visit, the participants underwent comprehensive tests including anthropometric examinations, interviewer-administered questionnaires, and biochemical tests. Coffee consumption frequency and the amount were measured using a semi-quantitative food frequency questionnaire. Using death certificate data from Korean National Statistical Office, the vital status of each study participant was identified. Sleep-related disorders were examined with interviewer-administered questionnaires. We estimated Hazard ratios and the corresponding 95% confidence intervals from Cox Proportional Hazard models. Multivariable models were established after adjusting for center, total caloric intake, age, gender, body mass index, physical activity, education, smoking, drinking, hypertension, diabetes, total cholesterol, c-reactive protein, energy-adjusted food groups of refined grains, vegetables, fruits, meat, fish, and dairy. Results: Compared with those who had no coffee consumption, participants who had about three cups of coffee per day showed a reduced risk of all-cause mortality, after adjusting for covariates. Those who had a sleep-related disorder showed no significant effect of coffee consumption on the risk of all-cause mortality, whereas those who had no sleep-related disorders showed significantly reduced risk of all-cause mortality. Conclusions: Our findings suggested that approximately three cups of coffee per day would be beneficial to reduce the risk of all-cause mortality only among adults with no sleep-related disorders. Coffee consumption should be prudent for those with sleep-related symptoms.

• The Korean Journal of Food And Nutrition
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• v.29 no.6
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• pp.911-922
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• 2016

This study was conducted to assess the recognition and consumption of meal alone and processed food according to major of college students in Seoul Metropolitan area and Chungcheong province, Republic of Korea. To accomplish this, a survey was conducted to investigate 353 college students (171 food & nutrition majors and 182 non-majors) regarding their general characteristics, dietary behaviors, meal alone issues, and the purchase and consumption of processed food. Most major and non-major students skipped breakfast. The main reason for skipping was not having time. Majors and non-majors put great importance on their lunch and evening meal, respectively. Nutrition information routes for majors were 'college class' (62.5%) and 'TV radio' (17.5%). However, the routes for non-majors to obtain nutrition information were 'internet smart phones' (41.1%) and 'TV radio' (28.3%). These results suggest the need to provide correct information concerning nutrition to college students. Most major and non-major students tend to have 0 to 2 times of meal alone per week. The main reason for meal alone was schedule unsuitable for eating with family or friends. The most critical factors for majors and non-majors when they chose menu to have meal alone were personal taste and money, respectively. The primary consideration for choosing processed food was price and the main purchase route was convenience store. The main reason for consuming processed food was easy-to-cook. Of processed foods, the most favored ones were noodles and fish products. Meal alone frequency was positively correlated with age (p<0.05), grade (p<0.05) and monthly allowance (p<0.05). Preference and consumption frequency of processed food were negatively correlated with concern about nutrition (p<0.05) and meal frequency (p<0.05), respectively. Based on these results, greater efforts should be made to provide meaningful information regarding programs for nutrition education to improve their dietary habits. Research and development of processed food specifically for college students eating alone should be increased.

• Korean Journal of Community Nutrition
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• v.6 no.5
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• pp.789-797
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• 2001

This study was conducted to find the differences in food consumption frequency of the middle aged(male 20, female 50) and the elderly(male 15, female 15) living in Chonju in December, 1998 according to food habits, smoking, alcohol drinking and exercising habit, health status, and the levels of nutrition knowledge and attitude store. The foods frequently consumed among the subjects were kimchi(15.4/week), mixed rice(11.5/week), rice(7.6/week), vegetables in soup, jjigae and jorim(5.0/week), mandarins and oranges(5.e/week), and seasoned laver(4.3/week). There were several factors influencing food consumption patterns. These were age, regularity of meal times, the status of smoking, alcohol drinking and exercising, and the level of nutrition attitude. The elderly ate cooked rice more frequently, while the middle aged ate fish, especially blue fishes more frequently. The middle aged who had breakfast regularly ate milk and milk products, legumes and fruits frequently. Those who smoked seemed to eat less cereals and starches and fats, while those who didn't smoke ate more sugars. The alcohol drinking group also ate less fats and the exorcising group ate almost all of food groups frequently. The status of health showed to be related with food consumption patterns. The normal group in hemoglobin ate eggs more frequently than the anemia group and the high risk group in blood pressure ate almost all of food groups more frequently. The high level group for nutrition attitude score chose vegetables, fruits, and milk and milk products more frequently than the other groups. On the other hand, low level group for nutrition attitude score was apt to eat ramyun, ham-sausage, and carbonated beverages more frequently. Therefore, nutrition education to improve the food habits find to change nutrition attitude is necessary to promote health status anti mole attention should be taken to the high risk group in blood pressure to guide proper food and nutrition intakes.

• The Korean Journal of Food And Nutrition
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• v.26 no.3
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• pp.492-501
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• 2013

The purpose of this study was to compare the eating experience and preferences for seafood among elementary school students in Gyeonggi-do. A survey was carried out on 383 elementary school students. As for the eating experience of seafood, the students were aware of and had eaten 'Scomber japonics (Go-deung-eo) (96.3%)', 'Anadara broughtonii (Jo-gea) (95.8%)', 'Ommastrephes sloani pacificus (O-jing-eo) (98.7%)', 'Panulirus japonicus (Sea-ou) (98.4%)', 'Porphyra tenera (Gim) (99.5%)', 'Shrimp, soused (81.2%)', 'Eo-muk (98.7%)', and 'Anchovy, dried (98.7%)'. As for the preferences for seafood, 'like (67.6%)', 'fair (21.5%)', and 'dislike (7.3%)' were observed. Concerning the frequency of seafood consumption, 4th grade students showed higher frequency of '1~2/week' compared to others (p<0.05). 6th grade students showed higher frequency of '3~4/week' compared to others (p<0.05). In terms of preferable cooking methods for seafood, 'grilling (35.0%)', 'soup (23.0%)', and 'raw fish (19.8%)' were observed. Boys showed a higher preference for 'grilling', 'frying' and 'raw fish' compared to the girls (p<0.05). Girls showed a higher preference for 'soup', 'braising' and 'steaming' compared to the boys (p<0.05). As for the seafood intake by eating place, 'home (60.1%)', 'eating-out (18.3%)', and 'school lunch menus (12.8%)' were observed in that order. Therefore, in order to increase the consumption and intake of seafood, students should attempt to achieve proper intake though information of nutrition and consistent nutritional education.

• Journal of Environmental Health Sciences
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• v.27 no.2
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• pp.127-137
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• 2001

Polychlorinated biphenyls(PCBs) are halogenated aromatic compounds with the empirical formula $C_{12}$ $H_{10-n}$C $l_{n}$(n=1~10), and are a mixture of possible 209 different chlorinated congeners. PCBs were widely used as dielectric fluids for capacitors and transformers, plasticizers, lubricant inks and paint addirives. Once released into the environment, PCBs persist for years because they are so resistant to degradation. In addition to their persistence in the environment, PCBs in ecological food chains undergo biomagnification because of their high degree of lipophilicity. In 1970s, the worldwide production of PCBs was ceased and the import of PCBs was prohibited since 1983 in Korea. In spite of these actions, many PCBs seems to be still in use. The environmental load of PCBs will continue to be recycled through air, land, water, and the biosphere for decades to come. This study was conducted to measure the concentrations of PCBs in the serum samples of 112 women by GC/MSD and GC/ECD. The main results of this study were as follows. 1. PCBs were detected in all samples. The mean $\pm$SD levels of PCBs in the serum were 3.613$\pm$0.759 ppb, and median were 3.828 ppb. 2. The correlation coefficients of the concentrations of 13 PCB congeners were from minimum, 0.7913 to maximum, 0.9985, and all was significant(p=0.0001). The correlation coefficient between the concentrations of PCBs and p,p'-DDE was 0.9641(p=0.0001). 3. There was a positive association between age and PCBs' concentrations (simple linear regression ; $R^2$=0.86, $\beta$=0.08023, p<0.001). 4. There was a positive association between total lipids in the serum and PCBs' concentrations (simple linear regression ; $R^2$=0.7058, $\beta$=0.00486, p<0.001). 5. For possible predictors of PCBs and p,p' -DDE levels in the serum, age adjusted model (Y=$\beta$$_{0}$+$\beta$$_1$age+ $B_2$X) was applied. For BMI, major residential area, wether to eat caught fish by angling, where to eat caught fish by angling(by parents in the past), fish consumption, meat consumption, meat consumption, and dairy consumption, there was no association. For total conception frequency and lactation frequency and lactation period, there was negative association.ion.

• The Korean Journal of Food & Health Convergence
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• v.6 no.6
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• pp.9-15
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• 2020

In this study, we want to investigate the nutrition knowledge, eating habits, and food intake patterns of adults who have a strong preference for sugary snacks or sugary drinks. In this study, 83 students, or 33.1% of the 267 adults, were found to belong to the sugary food group, and the results of the survey were as follows. In terms of the level of eating habits, both male and female adults see significant differences among the groups. In the question of the regularity of the three meals, the quality of breakfast, the balance of meals, the level of consumption of green vegetables, meat, fish and milk, the number of sugars was low, and the number of sugars, instant foods, ham and sausages was high. In terms of nutritional knowledge, both male and female adults had a low number of sugary foods, and there were significant differences among the groups. In terms of the frequency of food intake, the frequency of eating rice and mixed grain rice was low, and the frequency of eating ramen and bread was high.

• Nutritional Sciences
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• v.5 no.3
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• pp.161-167
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• 2002

Research on diet, acculturation, and ethnicity has suggested that immigrants dietary patterns differ from people who do not have immigration experience. The purpose of this paper is to present preliminary descriptive findings concerning consumption of foods that are common in Korean and American diets, by people of Korean descent residing in California. Adults (18 years of age or older, N=1334) of Korean descent who could be reached by listed residential telephone number in California were randomly selected and telephone-interviewed by closely supervised bilingual (Korean-English) interviewers who were specially trained for this task. This study found that dietary patterns of Koreans living in California differed according to age and gender; also, the frequency of consumption of foods differed according to number of years of residence and acculturation. Koreans who reported higher levels of acculturation to American society ate less of traditional Korean foods such as Kimchi and ate significantly more higher-fat foods common in the American diet. Increased acculturation was also related to an increased frequency of alcohol drinking. Older Koreans tended to eat slightly more of traditional foods such as rice, Kimchi, fruits, and fish, compared to younger Koreans. Women tended to eat healthier foods than men, consuming green vegetables, Kimchi, milk, cheese/yogurt, fruits, and bread more frequently. Koreans reporting longer residences in the United States reported a greater consumption of pork, bread, and soda.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.21 no.2
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• pp.90-98
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• 2011

Objectives: The aim of this study was to evaluate the level of urinary mercury and analyze which factors would affect urinary mercury concentration among dental hygienists in dental clinics. Methods: This study conducted by questionnaire and detection of urinary mercury concentration of 268 dental hygienists working in dental clinics from July to August of 2009. Data collected from two hundred and thirty-five dental hygienists were analyzed by the geometric mean (GM). Analytical results of urine samples with less than 0.3 g creatinine/L and greater than 3g creatinine/L were excluded from statistical analysis. Results: Urinary mercury concentration of 235 dental hygienists showed the geometric distribution. The arithmetic and geometric means of urinary mercury concentration were $0.996{\mu}g/g$ creatinine and $0.755{\mu}g/g$ creatinine, respectively. From multiple regression analysis, the number of amalgam filling, the consumption frequency of raw fish and the number of amalgam handling in current workplace was revealed as increasing factors of urinary mercury concentration. Conclusions: The level of urinary mercury in dental hygienists was higher than in general Korean population. The number of amalgam filling, the consumption frequency of raw fish and the number of amalgam handling in current workplace was revealed as increasing factors of urinary mercury concentration. Therefore using resin materials instead of amalgam in dental clinics is highly desirable.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.33 no.3
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• pp.176-178
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• 2000

The toxicity of muscle in pufferfish, Tikifugu vermicularis radiatus is known to be weak. However, no food poisoning has reported in this species although market consumption has been relatively high in Korea, especially on western coastal area. It presumes that there could be different toxicity in fish muscle of fresh and frozen specimens. In this regard, the frequency of toxic fish, the toxicity level in fresh and frozen fish as well as highest toxicity ann average toxicity were investigated. From the results, weak toxicity was detected in frozen fish muscle whereas no toxicity was measured in fresh fish. According to this, it is suggested that the toxicity of frozen and fresh fish must be tested simultaneously when tonicity of pufferfish is investigated. The above results implicate that toxicity of pufferfish may be due to the phsyical treatment such as freezing or thawing process.

• Journal of Nutrition and Health
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• v.34 no.2
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• pp.165-175
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• 2001

We performed case-control study to evaluate relationship between food intake and risk of breast cancer. We interviewed breast cancer cases(n=108) who were newly histologically identified and selected from Hanyang and Soonchunhyang University Hospital in Seoul. We used hospital-based control subjects(n=121), who were selected from the patients in the department of plastic surgery, general surgery and opthalmology of the same hospital by frequency matching. Matching variables were age($\pm$4 age) and menopausal status. We collected information on general characteristics of subjects, history of disease, family history of breast cancer, vitamin supplementation, alcohol intake, and food intake through individual interview. Dietary information was ascertained via a food frequency questionnaire method(total item=98). All analyses was conducted according to menopausal status. Especially, pepper and grape intake in premenopausal women, showed protective effect in breast cancer. Otherwise consumption of meat, pork, and fish was not associated with breast cancer risk in this study. At milk and dairy products, milk intake was associated with lower risk of breast cancer in postmenopausal women and overall intake of soy products was associated with breast cancer risk, but not significant. These findings suggested that consumption of some fruit and vegetable intake was a protective factor on breast cancer and further study with more number of subjects should be need to evaluate the breast cancer risk. (Korean J Nutrition 34(2): 165~175, 2001)