Your Reflux Might Actually Be Caused by Low Stomach Acid
When you think of reflux, you probably think of too much stomach acid. That’s what we’re usually told. So the usual advice is to reduce acid.
But here’s the surprising part, sometimes reflux is caused by too little stomach acid, not too much.
This can explain why some people don’t improve with acid-blocking medication, or even feel worse over time.
What does stomach acid actually do?
Stomach acid has some very important jobs:
– breaking down food, especially protein
– helping absorb nutrients like iron, zinc, and B12
– killing harmful bacteria from food
– signaling for food to move from the stomach into the gut
When acid is too low, food doesn’t break down properly. That’s where problems start.
How low stomach acid can cause reflux
When food sits in the stomach too long because there isn’t enough acid:
– Pressure builds up
– Gas forms
– Food ferments
This pressure can push stomach contents upward, causing burning, reflux, or regurgitation, even though acid levels are actually low.
Signs your reflux might be linked to low stomach acid
You may notice:
1. Reflux after eating (not on an empty stomach)
If symptoms show up after meals, especially large or protein-heavy meals, low acid could be part of the picture.
2. Feeling very full or heavy after meals
Food sitting in the stomach too long can cause bloating, pressure, or that brick in the stomach feeling.
3. Lots of burping or gas
Poor digestion leads to fermentation, which creates gas and pressure.
4. Undigested food in stools
This can be a sign that food isn’t being broken down properly in the stomach.
5. Reflux that doesn’t improve with antacids
If acid-reducing medications don’t help much, or symptoms return quickly, low acid may be involved.
6. Nutrient deficiencies
Low stomach acid can reduce absorption of iron, B12, calcium, and magnesium. This may show up as fatigue, weakness, or hair thinning.
7. Digestive issues alongside reflux
Constipation, diarrhoea, bloating, or food sensitivities often go hand-in-hand with low acid.
What causes low stomach acid?
Low stomach acid can be linked to:
– Chronic stress
– Long-term use of antacids including proton pump inhibitors
– Eating while rushed or distracted
– Poor chewing
– Nutrient deficiencies
– Getting older
– Gut infections or imbalance
Stress is a big one. When your body is stressed, digestion is not the priority.
Why stress makes it worse
Digestion works best when you’re calm.
Stress lowers stomach acid and digestive enzyme production.
So eating on the go, skipping meals, or eating while anxious can all make reflux worse, even if your diet looks healthy.
What can help support digestion?
This isn’t about stopping medication without guidance. It’s about understanding what your body may need.
Some gentle supports include:
– Eating slowly and chewing well
– Taking a few deep breaths before meals
– Eating regular meals
– Supporting stress and sleep
– Addressing gut health issues
– Avoiding water 30 minutes before and for 1 hour after eating
In some cases, professional guidance is important before using digestive support.
Reflux isn’t always about too much acid
Sometimes it’s about not enough digestion happening in the first place.
With the right support, reflux can improve by working with your digestion, not against it.