The study also found that participants who met criteria for caffeine use disorder tended to consume more caffeine, and were younger and more likely to be cigarette smokers. People who met criteria for caffeine use disorder reported problems such as insomnia, gastrointestinal troubles and anxiety, which were caused by or exacerbated by caffeine. Although for many people consumption of caffeine is benign, we learned from our study that there is a small but important subset of caffeine consumers who report that caffeine has interfered with their lives in clinically meaningful ways.” “What I find fascinating,” says Sweeney, “is how little people think about coffee or other caffeinated drinks as stimulants. The researchers found that 8% of the sample fulfilled DSM-proposed criteria for caffeine use disorder when the structured caffeine use disorder interview questions were adapted to the online survey format. To qualify for the study, participants needed to report consuming some caffeine-containing beverage or supplement in a typical week. Total caffeine intake in a typical week from all sources was summed and divided by seven to estimate daily caffeine consumption. Milligrams of caffeine per serving were calculated using typical milligrams per ounce for brewed/drip coffee (200 mg/12 oz.) brewed tea (40 mg/6 oz.) and soft drinks (40 mg/12 oz.). The goal was to better understand caffeine use disorder’s prevalence and clinical significance in the general population. Data were collected by an online survey panel aggregator used in other peer-reviewed research studies. Sweeney, Griffiths and colleagues conducted the online research survey with 1,006 caffeine-consuming adults from across the U.S. Significant withdrawal symptoms or use of the drug to relieve or avoid withdrawal are also characteristics of the condition. The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) recognized caffeine use disorder as “a condition for further study.”Ĭaffeine use disorder is a problematic pattern of caffeine consumption characterized by a persistent desire to cut down or control use of the substance along with unsuccessful efforts to do so despite problems caused or worsened by caffeine. That said, the psychiatry researcher at Johns Hopkins Bayview Medical Center’s Behavioral Pharmacology Research Unit feels compelled to raise awareness about caffeine’s potential to cause distress.īuilding on a long-running grant project in collaboration with Roland Griffiths, psychiatry researcher, a recent study on caffeine use disorder revealed responses to questions about caffeine use that Sweeney says were eye-opening and complementary to clinical trials conducted at Johns Hopkins - one in 2016 and one in 2019. Mary “Maggie” Sweeney wants to make one thing clear: She has no intention of convincing people to give up their coffee or favorite caffeinated beverage.
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