The stomach's basic digestive task
The stomach's primary function is to break down proteins, converting proteins from foods like meat into amino acids for the body to synthesize tissues. In addition, the stomach assists in the absorption of various minerals, including iron, calcium, zinc, and vitamin B12 , and stimulates the pancreas to secrete digestive enzymes and promote bile production and release to break down fats and absorb fat-soluble vitamins such as A , D , E , and K.
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The neglected immune defense
Another important but often overlooked function of the stomach is killing pathogens. Pathogens refer to harmful microorganisms, which the stomach effectively eliminates through its highly acidic environment ( pH between 1 and 3 ) and the action of enzymes, preventing foodborne illnesses. Lactoferrin and antimicrobial peptides in the stomach also have antibacterial and antifungal effects, together forming part of the immune defense system.
The chain reaction of insufficient stomach acid
When stomach acid concentration is insufficient or the pH level rises above 4 , the immune defense weakens, making the body more susceptible to small intestinal bacterial overgrowth ( SIBO ), heartburn, acid reflux, and indigestion. This can further lead to allergies, anemia, and mineral deficiencies, especially calcium, iron, and zinc. Zinc deficiency can even cause stomach ulcers, and treating Helicobacter pylori infection with antacids may actually worsen the problem.
The key relationship between stomach acid and nutrient absorption
Stomach acid not only affects protein breakdown and pathogen clearance, but also directly impacts the absorption of minerals and vitamins. Insufficient stomach acid reduces the bioavailability of minerals such as calcium, iron, magnesium, zinc, copper, and cobalt, and also affects the absorption efficiency of folic acid, vitamins C , D , and A.
Common causes of decreased stomach acid
As we age, gastric acid secretion naturally decreases. Other causes include long-term use of antacids, hypothyroidism, pernicious anemia, autoimmune diseases, Helicobacter pylori infection, and gastric bypass surgery. In severe cases, complete achlorhydria or hypochlorhydria may occur , further affecting nutrient absorption and gut microbiota distribution.
Uses and limitations of apple cider vinegar
Apple cider vinegar can aid in food absorption and inhibit excessive growth of small intestinal microbes, but it cannot directly repair insufficient stomach acid. To increase stomach acid concentration, it is necessary to supplement with nutrients such as chloride, sodium, potassium, zinc, and iodine, and chloride supplements such as Betaine Hydrochloride may be considered .
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Conclusion: Protect your stomach acid, protect your health.
The stomach is not only a digestive organ, but also a key part of the immune defense system and nutrient absorption. Understanding and maintaining the normal function of stomach acid helps prevent a variety of digestive and nutritional problems. Starting with diet and lifestyle habits is an important step in maintaining overall health.
YouTube source: https://www.youtube.com/watch?v=lTRcV8CpSaE
YouTube Column: Dr. Berger in Chinese Health knowledge
