26/10/2025
🔥 Why Your Body Needs Stomach Acid (HCL) — And What Happens When It’s Low
Hydrochloric acid (HCL) in the stomach is essential for healthy digestion. It’s often misunderstood — people think stomach acid is bad because of reflux, but in functional medicine we often see the opposite: not enough stomach acid.
✅ What HCL Does for You
1. Breaks Down Protein
• HCL activates pepsin, the enzyme needed to digest protein properly.
• Without it, proteins stay too large and become irritating to the gut.
2. Prevents Bacteria Overgrowth
• The stomach is supposed to be a sterile, acidic barrier.
• Low acid allows microbes to overgrow, causing bloating, gas, burping, and dysbiosis.
3. Triggers Nutrient Absorption
• Signals the pancreas and gallbladder to release digestive juices.
• Helps absorb key nutrients like B12, iron, zinc, calcium, magnesium.
4. Protects Against Food Sensitivities
• Proper digestion prevents food antigens from entering the bloodstream.
⚠️ When HCL is Low → Leaky Gut Risk
Low stomach acid leads to a cascade of digestive stress:
❌ Poor protein digestion
→ Large, partially digested proteins enter the small intestine
→ Immune system sees them as foreign
→ Inflammation + food sensitivities increase
❌ Microbial overgrowth
→ Gas + pressure pushes stomach contents upward
→ Reflux even when acid is low
❌ Chronic inflammation
→ Damages the tight junctions of the gut lining
→ Intestinal permeability (“leaky gut”)
💥 The Cycle: Low HCL → Reflux → Antacids → Lower HCL → More Damage
Many people are treated for reflux with acid blockers —
but that actually reduces HCL even more, worsening digestion and nutrient status.
🔑 Symptoms of Low Stomach Acid
• Bloating after meals
• Burping/acid reflux after eating
• Fatigue after high-protein meals
• Nutrient deficiencies (iron, B12)
• Hair loss, brittle nails
• Overgrowth (SIBO, candida)
✅ Supporting Healthy Stomach Acid
• Slow, mindful eating and chewing well
• Bitter foods before meals
• Apple cider vinegar or lemon water pre-meal (if tolerated)
• Functional testing + digestive support such as Betaine HCL (assessed with a practitioner)
🌟 Bottom Line
Stomach acid is not the enemy — it is your first line of defense and a cornerstone of complete digestion. When it’s too low, the entire digestive system becomes compromised, contributing to inflammation and leaky gut.