For millions of Britons who love coffee but struggle with acid reflux, a simple brewing change might make all the difference. Emerging research suggests that cold brew coffee could be significantly easier on sensitive digestive systems than its hot-brewed counterpart.
The Science Behind the Softer Brew
Experts explain that the traditional hot brewing process extracts more acidic compounds from coffee beans, which can trigger discomfort for those prone to heartburn and acid reflux. Cold brewing, however, involves steeping coffee grounds in cold water for 12-24 hours, resulting in a fundamentally different chemical profile.
"Cold brew coffee typically has lower acidity levels," explains Dr. Adam Rogers, author of "Proof: The Science of Booze." "The cooler temperature doesn't extract as many of the compounds that contribute to that bitter taste and acidic punch."
What This Means for Coffee Lovers
For the estimated 20% of UK adults who experience regular acid reflux, this discovery could be transformative. Many coffee enthusiasts have reluctantly abandoned their favourite beverage after finding it exacerbated their digestive issues.
- Reduced acidity: Cold brew can be up to 67% less acidic than hot coffee
- Smoother taste: The slower extraction creates a naturally sweeter, less bitter profile
- Customisable strength: Cold brew concentrate can be diluted to preference
A Word of Caution
While the lower acidity offers benefits, nutritionists caution that cold brew isn't a complete solution for everyone. Caffeine itself can relax the lower oesophageal sphincter, potentially triggering reflux regardless of brewing method.
"If caffeine is your primary trigger, switching to cold brew might not eliminate symptoms entirely," notes registered nutritionist Rhiannon Lambert. "It's about understanding your personal triggers and finding what works for your body."
The Bottom Line
Cold brew coffee represents a promising alternative for those who've had to avoid coffee due to acid sensitivity. While not a magic bullet, its reduced acidity makes it worth experimenting with for anyone seeking to enjoy coffee without the digestive discomfort.
As coffee culture continues to evolve in the UK, cold brew offers both a refreshing summer alternative and a potentially gentler option for year-round enjoyment.
