Intake of caffeine from all sources and reasons for use by college students

Mahoney, Caroline R.; Giles, Grace E.; Marriott, Bernadette P.; Judelson, Daniel A.; Glickman, Ellen L.; Geiselman, Paula J.; Lieberman, Harris R.

doi:10.1016/j.clnu.2018.04.004

Cited by 138 publications

(166 citation statements)

References 42 publications

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“…Caffeine is the most commonly used psychostimulant worldwide and mainly consumed in forms of coffee, tea, energy drink, and soda [1][2][3][4] . Although caffeine is mostly considered to be non-addictive, the observed physical and psychological dependence 5,6 consolidate its regular consumption [7][8][9] through the caffeineinduced reinforcing effects 10 , as well as the motive to resist withdrawal symptoms 11 and to increase alertness 12 . Higher alertness after acute caffeine intake 13 mirrors a reduced homeostatic sleep pressure, which is also evident in a reduced depth of sleep 14 .…”

Section: Introductionmentioning

confidence: 99%

Caffeine-induced Plasticity of Grey Matter Volume in Healthy Brains: A placebo-controlled multimodal within-subject study

Weibel

Landolt

et al. 2019

Preprint

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Disturbed sleep homeostatic states have been found to alter neuronal homeostasis and reduce grey matter (GM) volume. Caffeine intake that interferes with sleep homeostasis through antagonizing adenosine receptors can impair hippocampal synaptic strength, neurogenesis, as well as memory and learning in rats.In this study, reduced medial temporal GM volume was observed after daily caffeine intake in humans (3 x 150 mg x 10 days compared to 10-day placebo administration). The potential bias from reduced cerebral blood flow was controlled, and the GM reduction was independent of the change in sleep pressure. A decrease in working memory during daily caffeine intake was observed, albeit no association with the magnitude of GM changes. The findings indicate that daily caffeine intake might induce rapid cerebral plasticity and be detrimental for higher order cognitive performance in the long run. They may call into question whether the neuroprotective effects of caffeine found in acute or low dose administration in animals are generalizable onto the daily usage in humans.

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Section: Introductionmentioning

confidence: 99%

Caffeine-induced Plasticity of Grey Matter Volume in Healthy Brains: A placebo-controlled multimodal within-subject study

Weibel

Landolt

et al. 2019

Preprint

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“…Some studies, carried out mainly with university students and other young populations [9,10,11], have reported that caffeine intake was higher in men, older people and in smokers [10,11]. However, the factors associated with the habit of coffee consumption have scarcely been investigated.…”

Section: Introductionmentioning

confidence: 99%

Coffee Drinking and Associated Factors in an Elderly Population in Spain

Torres-Collado

Hera

Navarrete-Muñoz

et al. 2018

IJERPH

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Coffee consumption is highly prevalent worldwide, and many studies have reported positive and inverse associations of coffee with many diseases. However, factors associated with coffee consumption remain poorly characterized in some populations, such as the elderly. This study aimed to assess the factors associated with total, caffeinated and decaffeinated coffee consumption in an elderly population in Spain. Data were analyzed from 903 participants, aged 65 years and above, from two population-based studies carried out in the Valencia region in Spain (Valencia Nutritional Survey (VNS) and European Eye Study (EUREYE-Study). Total, caffeinated and decaffeinated coffee consumption was assessed through two specific questions using a validated food frequency questionnaire. Information on personal characteristics, anthropometry and lifestyles was collected in personal interviews. Multinomial logistic regression analysis was used to estimate the adjusted relative risk ratios (RRR) and confidence intervals (95% CI). The prevalence of total, caffeinated and decaffeinated coffee consumption was 70%, 38% and 32%, respectively. The consumption of caffeinated coffee was positively associated with: Educational level, RRR = 1.63 (1.09–2.44); body mass index (≥30), RRR = 2.03 (1.05–3.95); tobacco smoking, RRR = 1.96 (1.13–3.39); alcohol intake [≥12 g/day category intake vs. no-alcohol intake, RRR = 6.25 (3.56–10.95)]; and energy intake (p < 0.05). Consumption of caffeinated coffee was negatively associated with: Age (≥75 years), RRR = 0.64 (0.43–0.94); and pre-existing hypertension, RRR = 0.67 (0.45–0.98). The consumption of decaffeinated coffee was positively associated with: Alcohol intake, RRR = 2.63 (1.19–4.64); pre-existing diabetes, RRR = 1.67 (1.06–2.62); and energy intake (p < 0.01). The consumption of coffee is high among elderly people in Spain. It is a novelty in this study with elderly population that tobacco smoking and alcohol drinking were the two main factors associated with higher coffee consumption. Self-reported hypertension was associated with a lower consumption of caffeinated coffee, and pre-existing diabetes was associated with a higher consumption of decaffeinated coffee. These associations should be taken into account when the health effects of coffee consumption are investigated.

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“…9 Because it is a stimulant, caffeine can have positive effects on mood, especially alertness, as well as cognitive performance, in relatively low doses in single servings of many foods; and its widespread popularity likely reflects these positive behavioral properties. [10][11][12][13][14] However, as a consequence of these properties, caffeine, especially when consumed later in the day in high doses, can interfere with sleep. [15][16][17] Caffeine's effects are dose-dependent, and per capita daily intake by adults in the United States is about 186 mg/d and has been stable for 10 years and perhaps much longer.…”

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confidence: 99%

Daily Patterns of Caffeine Intake and the Association of Intake with Multiple Sociodemographic and Lifestyle Factors in US Adults Based on the NHANES 2007–2012 Surveys

Lieberman¹,

Agarwal²,

Fulgoni³

2019

Journal of the Academy of Nutrition and Dietetics

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Background Caffeine increases alertness when consumed in single servings of various products including coffee, tea, soft drinks, and energy drinks. Although not a nutrient, caffeine is consumed by 90% of the adult population in the United States.Objective This study examined the daily pattern of caffeine intake and its relationship to multiple demographic variables.Methods Data from the National Health and Nutrition Examination Survey (NHANES) 2007e2012 (adults aged 19þ years; n¼16,173) were used to determine the time of day at which caffeine is consumed and demographic factors associated with intake. Regression analyses characterized factors associated with caffeine intake including sex, age, ethnicity, education, smoking status, physical activity, employment status, total work hours, alcohol, and energy intake.Results Mean adult per capita caffeine intake was 169AE4 mg/d (meanAEstandard error).Most caffeine (70%) was consumed before noon, often at breakfast, and intake decreased progressively over the day, with little consumed after 9:00 PM. Intake was associated with age, ethnicity, smoking status, total calorie intake, and work hours (P<0.01) but not physical activity, economic status, education level, or employment status. Variables with the largest associations with intake were, respectively, ethnicity and age. Non-Hispanic black individuals consumed the smallest amounts (80AE2 mg/d), non-Hispanic white individuals consumed the greatest amounts (194AE3 mg/d), and Asian individuals (126AE7 mg/d) and Hispanic individuals consumed intermediate amounts (127AE3 mg/d). Middle-aged individuals (aged 50 to 54 years) consumed more caffeine (211AE6 mg/d) than younger (107AE4 mg/d, aged 20 to 24 years) and older individuals (153AE4 mg/d, aged 75 to 79 years).Conclusion Most caffeine is consumed in the morning, when alertness is lowest, and very little in the evening before sleep. Ethnicity and age were the variables most strongly associated with intake; work hours, occupation, energy and alcohol intake, and smoking were also associated with intake. Because caffeine increases alertness, it is not surprising that its pattern of consumption and factors associated with its intake vary from those of most other food constituents.

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Intake of caffeine from all sources and reasons for use by college students

Cited by 138 publications

References 42 publications

Caffeine-induced Plasticity of Grey Matter Volume in Healthy Brains: A placebo-controlled multimodal within-subject study

Caffeine-induced Plasticity of Grey Matter Volume in Healthy Brains: A placebo-controlled multimodal within-subject study

Coffee Drinking and Associated Factors in an Elderly Population in Spain

Daily Patterns of Caffeine Intake and the Association of Intake with Multiple Sociodemographic and Lifestyle Factors in US Adults Based on the NHANES 2007–2012 Surveys

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