Body Can Hide Vitamin B12 Deficiency for Years, Leading to Irreversible Damage
Translated & summarized from Maariv by baba
Dr. Maya Rozman warns that the body can store Vitamin B12 for years, masking a deficiency until irreversible nerve damage occurs. B12 is vital for red blood cells and the nervous system, primarily found in animal products, requiring vegans and some vegetarians to supplement. Absorption issues can affect those with digestive problems or on certain medications, and symptoms like fatigue and numbness may signal a deficiency. Early detection through blood tests is crucial, as prolonged deficiency can cause permanent neurological harm.
The story in 6 lines · by baba
- Vitamin B12 deficiency can go undetected for years, leading to irreversible nerve damage, according to Dr. Maya Rozman.
- B12 is essential for red blood cells and the nervous system, found mainly in animal products.
- Vegans and some vegetarians may need B12 supplements or fortified foods to meet their needs.
- Individuals with digestive issues or on certain medications are at higher risk of deficiency.
- Symptoms of B12 deficiency include fatigue, numbness, and cognitive problems, even without anemia.
- Early detection via blood tests is vital to prevent permanent neurological damage.
The human body can store Vitamin B12 in the liver for years, meaning a deficiency may go unnoticed until significant nerve damage occurs. Dr. Maya Rozman explains that this vitamin is crucial for red blood cell production, nervous system function, and DNA synthesis. Because the body stores B12, individuals who stop consuming it may not experience immediate symptoms, potentially allowing irreversible neurological damage to develop over time.
Vitamin B12 is naturally produced by bacteria and is primarily found in animal products such as meat, fish, eggs, and dairy. Plant-based foods generally do not contain reliable amounts of B12. Therefore, vegans must obtain it from fortified foods or supplements. Vegetarians who consume dairy and eggs should also ensure their diet consistently provides sufficient B12, as it may not be enough to meet their needs.
Absorption of B12 requires its release from proteins in the stomach and small intestine. The body can typically absorb only about 1.5 to 2 micrograms at a time. Supplements and fortified foods contain B12 in a form that doesn't require this initial release, making them beneficial for individuals with absorption issues.
Certain groups are at higher risk for deficiency, including those who have had gastric bypass surgery, individuals with digestive diseases like Crohn's or celiac disease, and those taking specific medications such as metformin for diabetes or drugs that reduce stomach acidity. A simple blood test can check B12 levels, but symptoms like fatigue, weakness, pallor, numbness, balance problems, and cognitive issues may indicate a deficiency even if a standard blood count appears normal.
Dr. Rozman advises that for most people, the specific type of B12 supplement or its form (e.g., sublingual tablets) does not significantly impact absorption. High doses in supplements are used because a smaller percentage is absorbed, and very high doses can bypass the normal absorption mechanism. While B12 has low toxicity, unnecessary high doses should be avoided. Vegans should prioritize reliable B12 sources, and vegetarians should verify their intake. For older adults and those on certain medications, monitoring B12 levels is recommended to prevent potentially permanent nerve damage.