Coffee being poured Coffee pot pouring cup of coffee. copyright American Heart Association

Does Your Morning Coffee Really Make You Eat Less? Interview with:
Coffee being poured Coffee pot pouring cup of coffee. copyright American Heart Association
Leah Panek-Shirley, PhD

Assistant Professor
Buffalo State College
Health, Nutrition, and Dietetics
Houston Texas What is the background for this study? What are the main findings?

The findings of existing previous research evaluating the effects of caffeine on appetite and eating are equivocal.

This study evaluated the effects of no (0 mg/kg body weight, e.g. placebo), low (1 mg/kg body weight), and moderate (3 mg/kg body weight) doses of caffeine in juice on appetite and eating in the laboratory and under free-living conditions.

While this study identified a small decrease (about 70 calories) in caloric intake after consuming the low (1 mg/kg) dose of caffeine in the laboratory at breakfast, this difference did not persist throughout the entire day.  In addition, there were no differences in hunger, fullness, thirst, or desire to eat as a result of caffeine. What should readers take away from your report?

Response: The take away message is that unsupported supplements should not be relied upon to decrease appetite or eating. What recommendations do you have for future research as a result of this work?

Response: Future research should evaluate different doses of caffeine, timing of caffeine of dose (e.g. mid-day, etc.), and differences by gender and/or body fat. Is there anything else you would like to add?

Response: This was a rigorous study design using a randomized, double blind, placebo controlled method.  No authors report any disclosures.


Leah M. Panek-Shirley, Carol DeNysschen, Erin O’Brien, Jennifer L. Temple. Caffeine Transiently Affects Food Intake at Breakfast. Journal of the Academy of Nutrition and Dietetics, 2018; DOI: 10.1016/j.jand.2018.05.015 

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Last Updated on July 23, 2018 by Marie Benz MD FAAD