• Korean Journal of Community Nutrition
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• v.16 no.3
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• pp.324-336
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• 2011

The purpose of the study was to examine the changes of food and nutrient intakes of college students between 1999 and 2009. Dietary survey of 169 college students was conducted by a 24-hour recall method for three days in 2009. Food and nutrient intakes in 2009 were compared with the data from 106 students collected by the same methods in 1999. The intakes of cereals & grain products and vegetables in 2009 were lower than those of 1999, but the intakes of meats, eggs, milk & milk products, and manufactured food were higher. The intake of rice per person decreased greatly from 452.2 g in 1999 to 351.4 g in 2009 in males, and from 306.9 g to 237.2 g in females. While the intakes of protein, fat, thiamin, niacin, vitamin $B_6$, phosphorus, potassium, zinc, and cholesterol were significantly higher, the intakes of dietary fiber were significantly lower in 2009 compared to 1999 both in males and females. The nutrients consumed less than the Recommended Intakes were vitamin A, riboflavin, vitamin C, and calcium in males and additionally folate, iron, and zinc in females in both 1999 and 2009. The ratio of carbohydrate, protein and fat as energy was 61 : 15 : 24 and 60 : 14 : 26 in 1999, and 54 : 16 : 30 and 56 : 15 : 29 in 2009 in males and females respectively, showing that carbohydrate intake decreased and fat intake increased greatly. Our data suggest that nutrition education is necessary for college students to help them consume more vegetables and fruits and less fat and cholesterol.

• Nutrition Research and Practice
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• v.4 no.4
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• pp.303-310
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• 2010

Consumption of vegetables and fruits is associated with a reduced risk of stroke, but it is unclear whether their protective effects are due to antioxidant vitamins or folate and metabolically related B vitamins. The purpose of the study was to test the hypothesis that intake of fruits and vegetables, which are major sources of antioxidant and vitamin B complex vitamins, reduces the risk of stroke. Cases consisted of patients diagnosed with first event of stroke (n = 69). Controls (n = 69) were age-, sex-, and body mass index-matched to cases. Multivariable-adjusted regression analysis showed that subjects who ate four to six servings of vegetable per day had a 32% reduction in the risk of stroke, and those with more than six servings per day had a reduction of 69% after adjusting for age, sex, BMI, and family history of stroke. Intakes of total fat, plant fat, calcium, potassium, vitamin $B_1$, vitamin $B_2$, vitamin $B_6$, niacin, and folate were significantly and negatively associated with the risk of stroke. Although the trend was not significant, stroke risk was reduced in the second quartile (1.21-2.66 servings per week) of fish intake. However, intake of fruits (average daily intake of 1.0 serving) and antioxidant vitamins such as carotene, vitamin C, and vitamin E was not associated with the risk of stroke. In conclusion, our observational study suggests that intake of fat and vegetables, rich sources of vitamin B complex, calcium, and potassium may protect against stroke.

• Preventive Nutrition and Food Science
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• v.12 no.2
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• pp.95-102
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• 2007

To elucidate the relationship among body mass index, nutrient intake and blood antioxidant capacity in the postmenopausal period, 60 women residing in Iksan area were recruited. Body mass index (BMI) was calculated base on height and weight, and food and nutrient intakes were estimated by 24-hour recalls of 3 non-consecutive days. Parameters of antioxidant capacity including the activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and total antioxidant capacity (TA) were measured in fasting blood samples from the subjects. The average age, height, weight and BMI of the subjects were 65 years, 151.1cm, 59.5 kg and 26.0 m/kg$^2$, respectively. The macronutrient intake rate of carbohydrate : protein : fat were 65:17.5:17.5; the mean intakes of energy and protein were 1532.7 kcal (86.3% of RDA) and 67.1 g (122.0% of RDA) respectively. The mean intakes of phosphorus, vitamin A, niacin and vitamin C were higher than Recommended Daily Allowance (RDA) for Koreans. On the other hand, calcium and riboflavin intakes were only 84.6% and 70.4% of RDA. Among the parameters of antioxidant capacity, SOD activity was significantly lower in lean subjects (BMI<20) than in the normal or overweight subjects (BMI${\geq}$20) (p<0.05). TAs of the subjects with the highest intakes of vegetables and fruits were significantly higher than those of subjects with lower intakes (p<0.05). Antioxidant capacity was compared among subjects according to 3 different nutrient intake levels according percentage of RDA for Koreans for selected nutrients with the following results: The high protein and niacin groups exhibited significantly lower TA status than those of the other intake groups (p<0.05). In conclusion, the low BMI was associated with lower SOD activity in postmenopausal women. Higher consumption of fruits and vegetables was associated with higher TA. When protein and niacin intakes were excessive, SOD activity and TA tended to be low. SOD and TA, among antioxidant indexes, seemed to be mostly influenced by other factors. Therefore, more studies on the effects of nutritional intake and the activity of antioxidant enzyme should be conducted.

• Journal of the Korean Society of Food Culture
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• v.38 no.4
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• pp.270-282
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• 2023

We performed a study to examine the association between diet quality and nonalcoholic fatty liver disease (NAFLD). Our study included 3,586 women aged 40-64 years who participated in the sixth Korea National Health and Nutrition Examination Survey. The study subjects were classified into the NAFLD group (n=816) and the normal group (n=2,770) using the hepatic steatosis index. The anthropometric indices, blood profiles, and dietary intake data of the subjects were obtained. The waist circumference, body mass index, and the serum levels of triglycerides, fasting blood sugar, HbA1c, and systolic and diastolic blood pressures were higher in the NAFLD compared to the normal groups (p<0.001, respectively). The intakes of protein (g/kg body weight, p<0.001), potassium (p<0.001), and vitamin A (p=0.006) were significantly lower in the NAFLD group. It was observed that the higher the total Korean Healthy Eating Index score, the lower the risk of NAFLD. A reverse relationship was shown between the NAFLD risk and the intakes of total fruits, total vegetables, vegetables excluding Kimchi and pickled vegetables, meat, fish, eggs and beans. Therefore, it is recommended that middle-aged women in Korea increase their intakes of fruits, vegetables, and foods high in protein for the proper management of NAFLD.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.6
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• pp.926-933
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• 2014

The purpose of this study was to evaluate vegetable intakes according to body mass index (BMI) of adolescents. For this, 400 middle and high school adolescents living in Buyeogun, Chungnam were classified into underweight group, healthy weight group, and overweight group according to BMI, after which eating habits, daily intake levels of vegetables, perception of vegetables, and vegetable-related eating habits were compared and analyzed. As the reason for skipping breakfast, 'Lack of time (44.3%)' was the most frequently cited. In the case of unbalanced food intakes, the underweight group and overweight group showed the highest response for 'grain' while the healthy weight group showed the highest response for 'vegetables' with significant differences (P<0.001). Daily intakes of one serving size of vegetables was 3.3 in the underweight group, 3.8 servings in the healthy weight group, and 3.8 servings in the overweight group, but there was no significant difference. However, frequency of vegetable intake at lunch was once in the underweight group, which was significantly lower than 1.3 servings in the healthy weight group and 1.4 servings in the overweight group (P<0.05). Regarding perception of vegetables, perception of 'Vegetable consumption helps to get beautiful skin' (P<0.01) and 'I eat vegetables or don't eat depending on a cooking method' (P<0.05) were significantly higher in the underweight group. In the evaluation of vegetables-related eating habits, preference for vegetables in the underweight group was lower than that in the healthy weight and overweight groups (P<0.05). Summarizing the above results, vegetable intake by adolescents was generally low, and the frequency of vegetable intake at lunch as well as preference for vegetables were significantly lower in the underweight group. Studies to identify the relationships between adolescent body types and vegetable intakes are required.

• Nutrition Research and Practice
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• v.12 no.6
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• pp.521-526
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• 2018

BACKGROUND/OBJECTIVES: Although a lot of effort has been put into increasing fruit and vegetable intakes in preschool children, vegetable intake in this group is still low. This study investigated whether nutrition education focusing on fruit and vegetable intakes can affect preschoolers' fruit and vegetable intakes as well as their behavioral outcomes. SUBJECTS/METHODS: Thirty-five preschoolers (54.3% boys, n = 19) aged 4-6 years residing in Seoul underwent weekly nutrition education intervention (8 sessions) between May and July 2016. Intakes of fruits and vegetables were measured during pre and post-intervention. At snack time, fresh fruit (150 g) and vegetable (120 g) snacks were distributed to each child by teachers. The remaining portions of the snacks were weighed and recorded for each child. Behavioral outcomes were measured by applying Child behavior checklist 1.5-5 and the Diagnostic and statistical manual of mental disorders. RESULTS: During post intervention, vegetable intake increased from $36.15{\pm}30.64g$ to $48.01{\pm}31.23g$ (P = 0.010). Among the emotional and behavioral problems measured by parents, levels of total problems (P = 0.001), internalizing (P = 0.004), externalizing (P = 0.003), anxiety and depression (P = 0.001), and aggressive behavior (P = 0.005) decreased. Anxiety (P = 0.026) score, as measured by teachers, also decreased. CONCLUSIONS: Nutrition education of preschoolers regarding the intakes of fruits and vegetables had a positive effect on preschoolers' vegetable intake as well as on their emotional and behavioral outcomes. A long-term, large-scale study with a broader study design is warranted to further investigate the role of fruit and vegetable intake in cognitive development and behavior of preschoolers.

• Nutrition Research and Practice
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• v.14 no.4
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• pp.384-400
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• 2020

BACKGROUND/OBJECTIVES: Dietary factors are important contributors to cardiometabolic and cancer mortality. We examined the secular trends of nine dietary factors (fruits, vegetables, whole grains, nuts and seeds, milk, red meat, processed meat, sugar-sweetened beverages, and calcium) and the associated burdens of cardiometabolic and cancer mortality in Korea using representative cross-sectional survey data from 1998 to 2016. SUBJECTS/METHODS: Using dietary data from Korean adults aged ≥ 25 years in the Korea National Health and Nutrition Examination Survey (KNHANES), we characterized secular trends in intake levels. We performed comparative risk assessment to estimate the population attributable fraction and the number of cardiometabolic and cancer deaths attributable to each dietary factor. RESULTS: A total of 231,148 cardiometabolic and cancer deaths were attributable to nine dietary risk factors in Korea from 1998 to 2016. Suboptimal intakes of fruits and whole grains were the leading contributors. Although the intakes of fruits, vegetables, and whole grains moderately improved over time, the intake levels in 2016 (192.1 g/d, 225.6 g/d, and 10.9 g/d, respectively) remained far below the optimal levels. Deaths attributable to the low intakes of nuts and seeds (4.5 g/d), calcium (440.5 mg/d), and milk (37.1 g/d) and the high intakes of red meat (54.7 g/d), processed meat (4.7 g/d), and sugar-sweetened beverages (33.0 g/d) increased since 1998. Compared with older age groups (≥ 45 years), more unfavorable changes in dietary patterns were observed in the younger population aged 25-44 years, including more sharply increased intakes of processed meat. CONCLUSIONS: We observed improvement in the intakes of fruits, vegetables, and whole grains and unfavorable changes in the intakes of processed meat and sugar-sweetened beverages over the past few decades. Our data suggest that to reduce the chronic disease burden in Korea, more effective nutritional policies and interventions are needed to target these dietary risk factors.

• Journal of the Korean Home Economics Association
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• v.31 no.4
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• pp.201-208
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• 1993

The ascorbic acid contents of 101 food items were analyzed by HPLC to provide database to estimate dietary intakes of ascorbic acid of Korean. Foods with high contents of ascorbic acid were green vegetables, citrus fruits, strawberry, kiwi, and fruit juices. This analysis data of ascorbic acid contents in some food items showed significant deviations compared with other Food Composition Table. Ascorbic acid content in soups were lower than those of raw foods by about 57%. The ascorbic acid contents in blanched or seasoned after blanching vegetables and boiled or steamed meals turned out to be decreased by about 52.3% and 47.5%, respectively, but the degrees were varied with the kind of foods as well as cooking methods. The ascorbic acid intakes from 18 most frequently consumed meals in Korea were determined to be about 1/2 of Food Composition Table according to this analysis data. The results showed the importance of accurate food database in assessing nutrient intake levels of population.

• Korean Journal of Community Nutrition
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• v.3 no.4
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• pp.583-593
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• 1998

This study aims to examine the relationship between chewing ability and nutritional intake status in the rural elderly. The subjects were 150 rural-dwelling elderly persons(68 males and 82 females) aged 65 years and over in Sungju-Gun, Kyunfsangpookdo. The respondents were interviewed using the questionnaires and measurments taken from a 24-hour recall method from February to April in 1998. Fifty-nine subjects(39.3%) were classified with normal chewing ability and sixty-four subjects(42.7%) could carry out all of the 10 ADL items by themselves. In addition, the group who were able to chew had more teeth and significantly higher ADL scores than the other group(p<0.01), whereas DMF value was significantly lower(p<0.001). The subjects with normal chewing ability also had higher of intakes of energy, protein, fat, carbohydrates, dietary fiber, salt, potassium, niacin, thiamin and riboflavin than in the unable group(p<0.05). As far as daily food intakes were concerned, considerable differences were revealed in the levels of grain and products and vegetables consumed depending on chewing ability(p<0.001). The results of the stepwise and vegetables consumed depending on chewing ability daily living activities and health self-assessment(p<0.05) were the most significant factors for energy intake status.

• Korean Journal of Community Nutrition
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• v.12 no.6
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• pp.761-772
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• 2007

It has been suggested that vegetables protect the cardiovascular system in part by attenuating blood pressure. The purpose of the present research was to examine blood lipids according to vegetable intakes. Anthropometric measurements, blood pressures, nutrient intakes using the 24-hour recall method, and serum lipids of <50th percentile vegetable intake group (<50th percentile VIG; men=66, women=111) and ${\ge}50th$ percentile vegetable intake group (${\ge}50th$ percentile VIG; men=83, women=94) were estimated. The average age, height, and BMI were 54.7 years, 158.2 cm, 62.2 kg, and $24.9kg/m^2$ for <50th percentile VIG and 53.7 years, 159.6 cm, 63.0 kg, and $24.7kg/m^2$ for ${\ge}50th$ percentile VIG, respectively. The daily food intake of the ${\ge}50th$ percentile VIG was significantly higher than that of the <50th percentile VIG (p<0.001). Also, daily intakes of cereals (p<0.001), legumes (p<0.05), nuts (p<0.05), vegetables (p<0.001), and fruits (p<0.05) of the ${\ge}50th$ percentile VIG were significantly higher than those of the <50th percentile VIG. The daily energy intakes of ${\ge}50th$ percentile VIG and <50th percentile VIG were 1342.7 kcal and 1782.0 kcal (p<0.001), and most nutrient intakes of the ${\ge}50th$ percentile VIG was significantly higher than that of the <50th percentile VIG. Serum cholesterol of the ${\ge}50th$ percentile VIG were significantly lower than that of the <50th percentile VIG (p<0.01). Also, vegetable intake showed significantly negative correlations with total cholesterol (p<0.05) and LDL-cholesterol (p<0.05). Based on these results, it should be emphasized that increase of vegetable intake improves the blood lipid profile.