Marie Claire UK Marie Claire UK
  • Fashion Fashion
      • Fashion
        • View all Fashion
        • Fashion Trends
        • Shopping
        • Watches and Jewellery
        • Fashion News
  • Beauty Beauty
      • Beauty
        • View all Beauty
        • Fragrance
        • Hair
        • Make Up
        • Skincare
        • Nails
        • Marie Claire Beauty Awards
  • Health Health
      • Health
        • View all Health
        • Fitness
        • Nutrition
        • Female Health
        • Wellbeing
  • Life Life
      • Life
        • View all Life
        • Opinions
        • Travel
        • Sustainability
        • Weddings
        • Money & Work
        • Competitions
  • Culture Culture
      • Culture
        • View all Culture
        • TV and Film
        • Celebrity News
        • Books
        • Royal News
  • Vouchers Vouchers
      • Clothing
        • View all Vouchers
        • Mint Velvet
        • Karen Millen
        • H&M
        • nobody's child
        • ASOS
        • ARKET
        • MANGO
      • Designer Clothing
        • View all Vouchers
        • Reiss
        • THE OUTNET
        • SSENSE
        • Mytheresa
        • Liberty London
        • Selfridges
        • Farfetch
      • Accessories
        • View all Vouchers
        • AllSaints
        • Aspinal of London
        • Charles & Keith
        • River Island
        • FitFlop
        • Kate Spade
        • Vagabond
      • Jewellery
        • View all Vouchers
        • Pandora
        • Abbott Lyon
        • Goldsmiths
        • Beaverbrooks
        • Astrid & Miyu
        • Swarovski
        • Angara Jewellery
      • Beauty
        • View all Vouchers
        • Sephora
        • Cult Beauty
        • Space NK
        • Dyson
        • Clarins
        • Look Fantastic
        • Clinique
      • Activewear
        • View all Vouchers
        • Lululemon
        • Gymshark
        • Sweaty Betty
        • Nike
        • adidas
        • New Balance
        • Helly Hansen
  • NEWSLETTER Signup to our newsletter
  • logoCreated with Sketch.
    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!


    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    You are now subscribed

    Your newsletter sign-up was successful


    An account already exists for this email address, please log in.
    Trending
    • Women in Sport 2026
    • Marie Claire Masters
    • Spring Summer 2026
    • Nail Trends 2026
    • Best Investment Bags
    • Best Perfumes
    • Digital Issues
    • Women Who Win
    1. Health and Fitness

    Could coffee after dinner be ruining your health?

    You might want to re-think that after dinner coffee as research suggests drinking caffeine after a high-fat meal could send your blood sugar levels through the roof

    By Hannah Thomas
    Published 5 April 2011 In Features

    When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

    Marie Claire health news: Coffee
    Marie Claire health news: Coffee
    • Facebook
    • X
    • Pinterest
    Share this article
    Join the conversation
    Follow us
    Add us as a preferred source on Google
    Subscribe to our newsletter

    You might want to re-think that after dinner coffee as research suggests drinking caffeine after a high-fat meal could send your blood sugar levels through the roof

    If you’re prone to an espresso after a big meal or a latte after lunch, you could be putting your health at risk as experts warn that eating a fatty meal followed by a coffee could doubles your blood sugar level.

    Researchers from the University of Guelph in Canada have discovered that fat affects the body’s ability to produce insulin and distribute it to the muscles causing blood sugar to rise to potentially harmful levels.

    ‘Ultimately we have found that fat and caffeinated coffee are impairing the communication between the gut and the pancreas, which could be playing a role in why participants couldn’t clear the sugar from their blood as easily,’ says study author Marie-Soleil Beaudoin.

    The study found that those participants who received the equivalent of two cups of caffeinated coffee five hours after ingesting a fatty beverage had blood sugar levels that were 32 per cent higher than those who had not consumed the fat.

    You may like
    • A woman on the beach, in a bikini, eating some fruit I'm an Exercise Physiologist—If You’re Feeling Puffy, Tired, and Achy This Summer, These Everyday Habits Could Be Playing a Role
    • A woman scrolling on her phone, working on her laptop on the floor 7 Avoidable Everyday Habits That Could Be Draining Your Energy Without You Realising
    • A woman holding a Pilates ball during a workout I'm a Cardiometabolic Expert: GLP-1s May Improve Inflammation and Heart Health—But There's More to the Story

    Further tests published in the Journal of Nutrition showed blood sugar levels increased by 65 per cent compared to what they were when participants had not ingested the fat and caffeinated coffee.

    ‘We have known for many years that people with or at risk of Type 2 diabetes should limit their caffeine intake,’ says Marie-Soleil.

    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!

    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    ‘Limiting the intake of saturated fatty acids found in red meat, processed foods and fast food meals is beneficial and drinking decaffeinated coffee instead of caffeinated can improve your glucose tolerance.’

    REPORT: DRINKING TEA COULD AID WEIGHT LOSS

    CLICK HERE FOR MORE HEALTH NEWS

    Hannah Thomas
    Social Links Navigation
    Read more
    A woman on the beach, in a bikini, eating some fruit
    Female health I'm an Exercise Physiologist—If You’re Feeling Puffy, Tired, and Achy This Summer, These Everyday Habits Could Be Playing a Role
    A woman scrolling on her phone, working on her laptop on the floor
    Female health 7 Avoidable Everyday Habits That Could Be Draining Your Energy Without You Realising
     
     
    A woman holding a Pilates ball during a workout
    Wellbeing I'm a Cardiometabolic Expert: GLP-1s May Improve Inflammation and Heart Health—But There's More to the Story
    Health freelancer Georgia Brown: Biomel Gut Supplement Review
    Nutrition Move Aside, Fibremaxxing—I Tested This Viral Fibre Supplement For A Month and The Results Blew Me Away
     
     
    Latest in Health and Fitness
    Woman stretching and practicing basic Pilates moves at home
    Fitness Everyone's Talking About These Basic Pilates Moves RN—So I Asked a Trainer to Rank the Most Effective
    Health freelancer Ash S trying an evening swim and sauna to boost calm
    Fitness My Mind Usually Races At Night—Until This Evening Swim and Sauna Ritual Calmed My Nervous System
     
     
    Health freelance writer Katie Sims trying a 20-minute wind down bedtime ritual
    Wellbeing I Swapped My Evening Scroll for a 20-Minute Wind-Down Ritual—Two Weeks Later, I Sleep Completely Differently
    Freelance writer Ash S during her bone broth experiment, where she drank it every day
    Nutrition I Drank Bone Broth Before Breakfast for a Month—and My Gut Health Wasn't the Only Thing That Changed
     
     
    Latest in Features
    Autumn Nail Trends 2026
    Nails From Fawn Print to Milky Matcha—These Are Autumn 2026’s Defining Nail Trends
    Fenty Beauty Pro Filtr Fluid Flex Foundation Review
    Make Up Fenty Beauty Just Replaced Its Most Iconic Foundation—3 Editors Put Its “Flexible” Full Coverage to the Test
     
     
    Charlotte Mensah Afro Hair
    Hair Charlotte Mensah Has Spent 40 Years Changing the Conversation Around Afro Hair—Now, Her Legacy Is Going on Display
    Dangers of sharing photos of children online
    Life I Used to Share Photos of My Daughter Online. Horrifying New AI Data Has Made Me Stop
     
     
    logoCreated with Sketch.
    • Site Archive
    • Contact Future's experts
    • Contact us
    • Terms and conditions
    • Advertise with us
    • Privacy policy
    • Cookies policy
    • About us
    Add as a preferred source on Google Add as a preferred source on Google

    Marie Claire UK is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.

    © Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA. All rights reserved. England and Wales company registration number 2008885.