People with depressive symptoms tend to use reflux medications more often, hinting at a strong link between mental and digestive health.
But new research published in the Journal of Affective Disorders suggests there may be a stronger link between reflux and mental health than many realise.
The study, which analysed data from over 31,000 adults in the US, found that people with depressive symptoms were significantly more likely to use acid reflux medications, including antacids, H2 blockers (H2RAs), and proton pump inhibitors (PPIs). And the more severe the symptoms, the more likely medication was being used.
What the research found
Drawing on more than a decade of health data from the US National Health and Nutrition Examination Survey (NHANES), the study identified 2,871 adults with depressive symptoms and assessed their use of reflux medications. After adjusting for confounding factors, the researchers found:
- A 73% increase in antacid use among those with depressive symptoms
- A 65% increase in H2RA use
- A 72% increase in PPI use
- The more severe the depressive symptoms, the more likely individuals were to be using any of the three types of medication.
The study also examined symptom types more closely. Depression is often broken into two broad categories:
- Cognitive-affective symptoms, like low mood, poor concentration and feelings of guil
- Somatic symptoms, like low energy, appetite changes and sleep disruption
Both categories were independently linked to increased reflux medication use. That means the association held whether someone’s depression felt ‘mental’ or ‘physical’ – suggesting a deeper connection between emotional health and digestive symptoms.
Why is this happening?
The researchers didn’t identify one single cause, but the link between depression and reflux isn’t new. What this study adds is scale and clarity. It reinforces the idea that reflux and depression often intertwine, and that emotional distress might silently contribute to physical symptoms.
Neurotransmitters like serotonin and norepinephrine, which regulate mood, also affect how the gut functions. When these are out of balance – as they often are in depression – digestive issues like reflux may be more likely to occur or feel worse.
There’s also the possibility of misattribution. Many people with depression first experience physical symptoms such as nausea, stomach pain, or a lump-in-the-throat sensation. They might receive treatment for reflux without realising that a mood disorder is contributing to these symptoms.
What this means for you
If you’re managing reflux and also experiencing stress, low mood, fatigue or other depressive symptoms, it’s worth looking at how the two might be connected. This is especially relevant if:
- You’ve increased your use of reflux medication over time
- Your symptoms seem to flare when you’re stressed or mentally low
- You’re unsure whether your reflux symptoms are really due to acid, or something else
That’s where Peptest can help.
Peptest is a simple at-home saliva test that detects pepsin, a stomach enzyme that should never appear in the throat. If it’s there, that means reflux is happening, regardless of how it feels or what triggered it.
If you’re taking medication but not sure it’s working, or if you suspect stress is part of the puzzle, Peptest offers clarity. It can help you understand whether acid reflux is really contributing to your symptoms… and inform your next steps, whether that’s medical, dietary or emotional.
Order Peptest today and take the guesswork out of your reflux symptoms.
Peptest detects pepsin — the stomach enzyme that marks reflux — in a saliva sample. Collected at home, analysed in our UK laboratory, results back within 48 hours.
- Results in 48 hours
- No GP referral needed
- UK laboratory
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