Caffeine occurs naturally in the leaves and seeds of many plants and is artificially added to some beverages. Consumption of caffeine has been linked to both positive and adverse health outcomes. We incorporated estimates of caffeine content (mg/100g or ml) of foods and drinks, taken from the published literature, to provide a preliminary estimate of caffeine intake for the UK population, based on data collected in the National Diet and Nutrition Survey 2008-10. Among consumers mean total caffeine intakes of adult men 19+ y were significantly greater than intakes by boys 4-10y and 11-18y (p<0.05), with the same age-related differences seen for females. 4.1% of men 19+ y and 3.8% of women 19+ y had caffeine intakes in excess of 300mg/d. The addition of caffeine to UK food composition databases will allow more detailed study of the health effects of caffeine consumption.
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http://dx.doi.org/10.1016/j.foodchem.2012.07.092 | DOI Listing |
Urogynecology (Phila)
January 2025
From the Division of Urogynecology and Reconstructive Pelvic Surgery, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD.
Importance: Patients with urgency urinary incontinence are often recommended to avoid bladder irritants, but there is a lack of evidence for this.
Objective: The aim of the study was to compare consumption of purported bladder irritants between women with and without urgency urinary incontinence.
Study Design: We performed a case-control study of nonpregnant females aged ≥20 years using the National Health and Nutrition Examination Survey, 2007-2020.
Curr Dev Nutr
January 2025
Department for Public Health, Aarhus University, Aarhus, Denmark.
Background: Carbohydrate restriction can alter substrate utilization and potentially impair endurance performance in female athletes. Caffeine intake may mitigate this performance decrements.
Objectives: The aim of this study was to test the hypothesis that maximal fat oxidation (MFO) rate would be enhanced in the carbohydrate (CHO) restricted state in trained females.
J Int Soc Sports Nutr
December 2025
University of Bologna-Alma Mater Studiorum, Department of Quality of Life Sciences, Bologna, Italy.
Background: Understanding the impact of caffeine intake on body composition is a topic of growing research interest. The article "Association Between Caffeine Intake and Fat-Free Mass Index: A Retrospective Cohort Study" by Tian et al. explored this relationship, highlighting a positive correlation between caffeine consumption and fat-free mass index (FFMI).
View Article and Find Full Text PDFBMC Musculoskelet Disord
January 2025
Department of Orthopedics, Wuhan Fourth Hospital, Wuhan fourth hospital, No. 473, Hanzheng Street, Qiaokou District, Wuhan, China.
Objective: The association between sleep duration, caffeine intake, and bone mineral density (BMD) is not well understood, with previous studies providing controversial results. This study explores the associations among caffeine intake, sleep duration, and BMD.
Methods: Data were sourced from the National Health and Nutrition Examination Survey (NHANES) from 2011 to 2018, including 13,457 participants who self-reported sleep duration and caffeine intake, with BMD measured via dual X-ray absorptiometry.
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