Stomach Acid
The overlooked essential. Stomach acid (HCl) is critical for protein digestion, mineral absorption, B12 release, and killing pathogens. Low stomach acid is extremely common and often mistaken for high acid. Symptoms overlap, but causes and treatments are opposite.
Functions of Stomach Acid
Protein Digestion
Denatures proteins. Activates pepsin. Without acid, proteins don't break down.
Mineral Absorption
Iron, calcium, zinc, magnesium. All need acidic environment. Deficiencies common.
B12 Release
Acid separates B12 from food proteins. Then intrinsic factor binds it.
Pathogen Defense
Kills bacteria, parasites in food. Sterilizes what you eat. First immune barrier.
Triggers Digestion
Signals pancreas and gallbladder. Releases bile and enzymes. Cascade effect.
SIBO Prevention
Keeps bacteria from migrating up. Low acid = overgrowth risk.
Signs of Low Stomach Acid
Bloating After Meals
Food sits undigested. Fermentation. Gas production.
Reflux/Heartburn
Paradoxically, low acid causes reflux. Food ferments, pressure builds, LES opens.
Undigested Food in Stool
Visible meat fibers. Digestion incomplete. Proteins need acid.
Nutrient Deficiencies
Low B12, iron, zinc despite eating well. Can't absorb.
Burping
Excessive belching. Gas from fermentation. Soon after eating.
Feeling Full Quickly
Food sits like a rock. Slow emptying. Heavy feeling.
Supporting Stomach Acid
Betaine HCl
Supplemental acid. With protein meals. Start low, increase until warmth.
Apple Cider Vinegar
1-2 tbsp before meals. Acidifies stomach. Gentler approach.
Bitter Herbs
Stimulate acid production naturally. Gentian, dandelion. Before meals.
Zinc
Needed to make HCl. Deficiency common. Test and supplement.
Chew Thoroughly
Mechanical breakdown first. Signals stomach. Eat slowly.
Avoid PPIs Long-Term
Acid blockers worsen root cause. Rebound issues. Nutrient deficiencies.