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Effect of decaffeination of coffee or tea on gastro-oesophageal reflux.

Abstract

BACKGROUND

Coffee and tea are believed to cause gastro-oesophageal reflux; however, the effects of these beverages and of their major component, caffeine, have not been quantified. The aim of this study was to evaluate gastro-oesophageal reflux induced by coffee and tea before and after a decaffeination process, and to compare it with water and water-containing caffeine.

METHODS

Three-hour ambulatory pH-metry was performed on 16 healthy volunteers, who received 300 ml of (i) regular coffee, decaffeinated coffee or tap water (n = 16), (ii) normal tea, decaffeinated tea, tap water, or coffee adapted to normal tea in caffeine concentration (n = 6), and (iii) caffeine-free and caffeine-containing water (n = 8) together with a standardized breakfast.

RESULTS

Regular coffee induced a significant (P < 0.05) gastro-oesophageal reflux compared with tap water and normal tea, which were not different from each other. Decaffeination of coffee significantly (P < 0.05) diminished gastro-oesophageal reflux, whereas decaffeination of tea or addition of caffeine to water had no effect. Coffee adapted to normal tea in caffeine concentration significantly (P < 0.05) increased gastro-oesophageal reflux.

CONCLUSIONS

Coffee, in contrast to tea, increases gastro-oesophageal reflux, an effect that is less pronounced after decaffeination. Caffeine does not seem to be responsible for gastro-oesophageal reflux which must be attributed to other components of coffee.

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  • Authors+Show Affiliations

    ,

    2nd Medical Department, München-Bogenhausen Hospital, Germany.

    , , ,

    Source

    MeSH

    Adult
    Caffeine
    Coffee
    Female
    Gastroesophageal Reflux
    Humans
    Male
    Random Allocation
    Tea
    Water

    Pub Type(s)

    Comparative Study
    Journal Article

    Language

    eng

    PubMed ID

    7918922

    Citation

    Wendl, B, et al. "Effect of Decaffeination of Coffee or Tea On Gastro-oesophageal Reflux." Alimentary Pharmacology & Therapeutics, vol. 8, no. 3, 1994, pp. 283-7.
    Wendl B, Pfeiffer A, Pehl C, et al. Effect of decaffeination of coffee or tea on gastro-oesophageal reflux. Aliment Pharmacol Ther. 1994;8(3):283-7.
    Wendl, B., Pfeiffer, A., Pehl, C., Schmidt, T., & Kaess, H. (1994). Effect of decaffeination of coffee or tea on gastro-oesophageal reflux. Alimentary Pharmacology & Therapeutics, 8(3), pp. 283-7.
    Wendl B, et al. Effect of Decaffeination of Coffee or Tea On Gastro-oesophageal Reflux. Aliment Pharmacol Ther. 1994;8(3):283-7. PubMed PMID: 7918922.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Effect of decaffeination of coffee or tea on gastro-oesophageal reflux. AU - Wendl,B, AU - Pfeiffer,A, AU - Pehl,C, AU - Schmidt,T, AU - Kaess,H, PY - 1994/6/1/pubmed PY - 1994/6/1/medline PY - 1994/6/1/entrez SP - 283 EP - 7 JF - Alimentary pharmacology & therapeutics JO - Aliment. Pharmacol. Ther. VL - 8 IS - 3 N2 - BACKGROUND: Coffee and tea are believed to cause gastro-oesophageal reflux; however, the effects of these beverages and of their major component, caffeine, have not been quantified. The aim of this study was to evaluate gastro-oesophageal reflux induced by coffee and tea before and after a decaffeination process, and to compare it with water and water-containing caffeine. METHODS: Three-hour ambulatory pH-metry was performed on 16 healthy volunteers, who received 300 ml of (i) regular coffee, decaffeinated coffee or tap water (n = 16), (ii) normal tea, decaffeinated tea, tap water, or coffee adapted to normal tea in caffeine concentration (n = 6), and (iii) caffeine-free and caffeine-containing water (n = 8) together with a standardized breakfast. RESULTS: Regular coffee induced a significant (P < 0.05) gastro-oesophageal reflux compared with tap water and normal tea, which were not different from each other. Decaffeination of coffee significantly (P < 0.05) diminished gastro-oesophageal reflux, whereas decaffeination of tea or addition of caffeine to water had no effect. Coffee adapted to normal tea in caffeine concentration significantly (P < 0.05) increased gastro-oesophageal reflux. CONCLUSIONS: Coffee, in contrast to tea, increases gastro-oesophageal reflux, an effect that is less pronounced after decaffeination. Caffeine does not seem to be responsible for gastro-oesophageal reflux which must be attributed to other components of coffee. SN - 0269-2813 UR - https://www.unboundmedicine.com/medline/citation/7918922/full_citation L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&amp;sid=nlm:pubmed&amp;issn=0269-2813&amp;date=1994&amp;volume=8&amp;issue=3&amp;spage=283 DB - PRIME DP - Unbound Medicine ER -