Low stomach acid: The hidden cause of your gut symptoms no one talks about
- Feb 10
- 3 min read
(And why antacids might be making things worse)
You’re bloated, burping, have reflux and feel full after two bites.
…So you assume it’s too much acid, like everyone else I’ve seen over the years, and you’ve been told that’s the reason. Imagine how confused you are when I tell you it’s the opposite?
Most of my clients who struggle with bloating, reflux, fatigue, and food intolerances actually have too little stomach acid, and the fix is SHOCK HORROR, taking more stomach acid.
What is stomach acid & why you need it
Stomach acid (hydrochloric acid, or HCl) is your body’s first line of defence:
It breaks down proteins.
Helps you absorb nutrients like B12, iron, calcium, and magnesium.
Kills off bacteria and parasites before they cause trouble (and now can you start to see why we have parasite issues in the west. 98% of my clients have low stomach acid, so you are almost inviting parasites into your body.)
Signals your digestive system to do its job.
Without enough acid, food sits like a rock, FERMENTED and pushes back up - hello reflux and burping. (For everyone that has told me over the years, it’s like food is going back up, you are right, it’s doing exactly that!!)
Symptoms of low stomach acid (that don’t get flagged as “low acid”)
Bloating or heaviness after meals (especially protein)
Reflux or heartburn
Burping after food
Feeling full quickly
Bad breath or a coated tongue
Undigested food in stool
Intense food cravings
Itching around the rectum (a parasite clue)
Low iron or B12 levels despite supplements
Why you’re depleted (even if you eat well)
Stress turns off stomach acid like a switch
Aging naturally reduces acid production
Pregnancy (yes, reflux in pregnancy is usually low, not high acid)
Gut infections or parasites can lower acid over time
Antacids or reflux medications suppress what little acid you have left
Low stomach acid runs in families. You may have had it since childhood
What about apple cider vinegar?
ACV can help you feel temporarily more acidic, but it doesn’t replace real stomach acid. It’s not strong enough to digest a steak, kill parasites, or absorb nutrients like B12. It doesn’t HEAL your actual problem. ACV has many other healing benefits, but it does not teach your body to make its own stomach acid again.
You likely won’t fix this without stomach acid support
In most cases, you need to restore acid, not just add bitters or vinegar. This often means supporting your body with betaine HCl (in the right dose and timing), guided by a practitioner who understands your history. PLEASE do not read this to mean you can self-prescribe yourself stomach acid based on this blog post. Please use this as information to get empowered to help you piece together your health puzzles, but please work with a health practitioner.
But please don’t guess
Stomach acid isn’t something to self-diagnose or supplement blindly. It needs to be done strategically, especially if you’ve had ulcers, reflux meds, or digestive disorders.
Always work with someone who knows how to assess and support it properly.
Final thoughts
Low stomach acid is one of the most common and overlooked root causes of gut issues I see in clinic.
And the good news? It’s also one of the most fixable.
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