Is Coffee Bad for Acid Reflux?
Hot Drinks
The Verdict
Coffee is a near-zero-calorie beverage that is one of the richest dietary sources of antioxidants, including polyphenols and chlorogenic acid. Research links moderate coffee consumption to reduced risk of type 2 diabetes, Parkinson's disease, and liver disease. However, its caffeine content (~40mg per 100g / ~95mg per 8oz cup) makes it a significant trigger for acid reflux sufferers, as caffeine relaxes the lower oesophageal sphincter and stimulates gastric acid production.
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Protocol Ratings
Coffee and Acid Reflux
Caffeine in coffee relaxes the lower oesophageal sphincter, while other compounds stimulate excess gastric acid production. Coffee's natural acidity (pH 4.5–5) adds direct irritation as a third mechanism.
View the full Acid Reflux Diet Card →Coffee and Low Sugar Diet
Black coffee contains 0g sugar per 100ml. Sugar comes only from what you add. Coffee may actually help improve insulin sensitivity.
View the full Low Sugar Diet Card →Forensic Analysis
Low calorie density (1 kcal/100g) allows generous portions without significant caloric impact.
Poor satiety return. Low protein (0.1g) and fibre (0g) provide minimal fullness for the caloric cost.
Easy to track accurately. Consistent form with predictable caloric content per unit.
Frequently Asked Questions
How many calories and carbs are in Coffee?
Coffee contains 1 kcal and 0g of carbohydrates per 100ml.
DietVox Insight: DietVox rates Coffee with a 'LOW' Deception Level, meaning visual estimation is reasonably reliable for this food.
Is Coffee good for weight loss?
Yes, at 1 kcal/100ml, Coffee is a low-calorie option that supports weight loss when part of a balanced diet.
DietVox Insight: DietVox rates the Satiety ROI as LOW, so pairing with protein or fibre sources enhances fullness.
Is Coffee bad for acid reflux?
Yes, Coffee is classified as a reflux trigger. It may relax the lower oesophageal sphincter or irritate the stomach lining.
DietVox Insight: DietVox Intelligence identifies this as a trigger food for the Acid Reflux protocol. Consider alternatives with a GREEN rating.
Related Foods
Citations & Sources
- Nutritional composition data for Coffee, per 100g serving. USDA FoodData Central
- Caffeine may exacerbate acid reflux, anxiety, and insomnia. Limit to 400mg/day (approx 4 cups). NHS UK
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