Assessment of caffeine intake in the Korean population

Lim, Ho Soo; Hwang, Ju Young; Choi, Jae Chon; Kim, Meehye

doi:10.1080/19440049.2015.1077396

Cited by 35 publications

(31 citation statements)

References 18 publications

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“…Coffee consumption is one possible risk factor for bleeding in early pregnancy in the first trimester. Even though the market for caffeinated beverages has increased in the past decades, coffee remains the most frequently consumed caffeinated beverage [1,7]. A standard cup of coffee is generally expected to provide 100 mg of caffeine; however, this varies according to portion size, brewing method, and brand [1-3, 6, 7, 22].…”

Section: Discussionmentioning

confidence: 99%

“…Although other beverages have some caffeine content (one cup of tea, 64.0 mg of caffeine; 12 oz. of coke, 46.0 mg of caffeine; one cup of hot chocolate, 16.0 mg of caffeine; and caffeinated soda, 46.0 mg of caffeine), these caffeinated beverages do not significantly affect daily caffeine consumption among Koreans [7,23]. Nisenblat et al reported that caffeine intake is not associated with an increased risk of bleeding in early pregnancy, with the possible exception of very high levels of caffeine intake [22].…”

Section: Discussionmentioning

confidence: 99%

“…Coffee contains several physiologically active substances; caffeine, in particular, is an important component of coffee [5,6]. Other caffeinated beverages or foods do not contribute significantly to the daily caffeine intake among Koreans [7]. Therefore, it is important to examine the effect of coffee consumption on health.…”

Section: Introductionmentioning

confidence: 99%

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Maternal coffee intake and the risk of bleeding in early pregnancy: a cross-sectional analysis

Choi

Koo

Park

2020

BMC Pregnancy Childbirth

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Background: Caffeine can easily cross the placenta, and maternal caffeine intake, thus, has an effect on fetal growth. However, it is still unclear whether coffee consumption is an independent risk factor for bleeding in early pregnancy. The objective of this study was to examine the association between pre-pregnancy coffee consumption patterns and the risk of bleeding in early pregnancy. Methods:A cross-sectional analysis was conducted among 3510 pregnant women from the Korean Pregnancy Outcome Study who underwent baseline examination and for whom the results of the pregnancy were available. Coffee consumption patterns before pregnancy were examined using a questionnaire. The participants were classified according to the frequency of coffee consumption into seldom (< 1 cup/week), light (< 1 cup/day), moderate (1 cup/day), and heavy coffee drinker (≥2 cups/day) groups. Bleeding in early pregnancy was defined as the occurrence of vaginal bleeding in the first 20 weeks of pregnancy. Multiple logistic regression models were applied to examine the association between pre-pregnancy coffee consumption and the risk of bleeding in early pregnancy, after adjusting for age, body mass index (BMI), systolic blood pressure, cigarette smoking and alcohol consumption behavior, previous and current physical activity levels, stress levels, history of depression, antenatal depressive symptoms during the first trimester, type of emesis, parity, and the number of livebirths, stillbirths, miscarriages, and abortions.Results: Women who were light, moderate, and heavy coffee drinkers before pregnancy had adjusted ORs of 1.086, 1.225, and 1.358, respectively, for bleeding in early pregnancy. In a fully adjusted model, heavy coffee drinkers showed a significantly higher risk of bleeding in early pregnancy, even in women aged 35 years and younger (OR 1.680) and in those with a normal body mass index (OR 1.389), who were at relatively low risk for pregnancy-related complications. Conclusions: Our results showed that heavy coffee drinking was independently associated with a higher risk of bleeding in early pregnancy among pregnant Korean women, suggesting that caffeine intake before conception and during pregnancy should be reduced. Our study highlights the need for nutritional interventions for healthy coffee drinking among pregnant women in Korea.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Maternal coffee intake and the risk of bleeding in early pregnancy: a cross-sectional analysis

Choi

Koo

Park

2020

BMC Pregnancy Childbirth

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“…Caffeine, theobromine, theophylline, and pentoxifylline are derivatives of methylxanthine. While the majority of caffeine consumption comes from coffees, teas, and colas (Lim et al ., ), other sources include supplements, energy drinks, and chocolate. Theobromine is found in chocolate, tea leaves, and the cola nut.…”

Section: Alcohol Tobacco and Drugsmentioning

confidence: 99%

Chronic exposures and male fertility: the impacts of environment, diet, and drug use on spermatogenesis

2016

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SUMMARYSeveral recent studies have suggested that sperm concentrations and semen quality have been decreasing over the past several decades in many areas of the world. The etiology of these decreases is currently unknown. Acute events can have significant impacts on spermatogenesis and are often readily identified during the male fertility evaluation. The majority of male factor infertility, however, is idiopathic. Chronic, low-dose exposures to chemicals and nutrients are more difficult to identify, but are extremely prevalent. These exposures have been shown to have dramatic effects on both individual and community health and interest in the cumulative and synergistic impacts of such agents on spermatogenesis has been increasing. While our understanding of these potential hazards is evolving, it is clear that they may significantly influence male reproductive potential. This review explores the literature related to effects of chronic exposures from drug use, dietary intake, and the environment on spermatogenesis in humans and animals.

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“…The EU requires a 'high caffeine content' label for products with caffeine in excess of 150 mg [28]. The US FDA does not require the amount of caffeine be displayed but caffeine must be listed as a product [29]. Recently, the Korean National Food and Drug Administration implemented a new requirement of labeling the total amount of caffeine in products including café-made coffee in order to prevent caffeine overdose [5].…”

Section: Introductionmentioning

confidence: 99%

Motivations Influencing Caffeine Consumption Behaviors among College Students in Korea: Associations with Sleep Quality

Choi

2020

Nutrients

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Caffeinated beverages are a part of daily life. Caffeinated beverages such as coffee, tea, energy drinks, and soft drinks are easy to purchase and are frequently consumed by young college students. Moreover, smoking influences the consumption of caffeinated beverages. The concentration of caffeine in these products is an attractive factor for individuals that desire the effects of caffeine; however, abusing such products may lead to poor sleep quality. The motivations that drive caffeinated beverage consumption were investigated in this study through a survey. Self-reported questionnaires were distributed on campus to students enrolled at a university in Korea. The motivations of the students for consuming each caffeinated beverage and their sleep quality were investigated. The results of exploratory factor analysis showed the motivations for caffeinated beverage consumption were alertness, taste, mood, socialization, health benefits, and habit. The motivations for consuming each caffeinated beverage product were different. For instance, coffee consumption was motivated by a desire for alertness (B = 0.107, SE = 0.049, t = 2.181, p < 0.05) and by habit (B = 0.345, SE = 0.046, t = 7.428, p < 0.001), whereas tea consumption was influenced by socialization (B = 0.142, SE = 0.060, t = 2.357, p < 0.05). Energy drink consumption was motivated by a desire for alertness (B = 0.100, SE = 0.034, t = 2.966, p < 0.01) and health benefits (B = 0.120, SE = 0.051, t = 2.345, p < 0.05), while the consumption of soft drinks was not motivated by any specific factors. Caffeinated beverage consumption did not show a significant relationship with sleep quality, although the general sleep quality of the respondents was poor. Smoking status showed significant differences in coffee and tea consumption as well as sleep quality. Smokers had a higher intake of coffee and a lower intake of tea than non-smokers. No interaction effect between smoking and coffee on sleep quality was found. Labeling detailing the amount of caffeine in products is necessary and a cautionary statement informing consumers that smoking cigarettes enhances the effects of caffeine should be included.

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Assessment of caffeine intake in the Korean population

Cited by 35 publications

References 18 publications

Maternal coffee intake and the risk of bleeding in early pregnancy: a cross-sectional analysis

Maternal coffee intake and the risk of bleeding in early pregnancy: a cross-sectional analysis

Chronic exposures and male fertility: the impacts of environment, diet, and drug use on spermatogenesis

Motivations Influencing Caffeine Consumption Behaviors among College Students in Korea: Associations with Sleep Quality

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