Vitamin B12 Deficiency
- Reliable and relatively consistent scientific data showing a substantial health benefit.
- Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
- For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.
Our proprietary “Star-Rating” system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.
For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.
|Consult a qualified healthcare practitioner||[3 stars] Vitamin B12, often given as an initial injection and then orally, may correct a deficiency.|
|See a doctor for evaluation||[3 stars] Taking vitamin B12 can help counteract deficiencies related to depression.|
|600 to 1,000 mcg daily||[3 stars] Taking vitamin B12 may help prevent and treat anemia. Deficiencies of iron, vitamin B12, and folic acid are the most common nutritional causes of anemia.|
(Age-Related Cognitive Decline)
|Consult a qualified healthcare practitioner||[2 stars] Improved brain function among seniors has been observed after correcting vitamin B12 deficiency with injections, but oral vitamin B12 has not been studied for ARCD. People with ARCD should be tested for vitamin B12 deficiency.|
|If deficient: 300 to1,000 mcg daily||[2 stars] Some studies have found people with thalassemia to be frequently deficient in vitamin B12, supplementing with the vitamin may help.|
(Delayed Gastric Emptying, Helicobacter Pylori Infection, Indigestion, Heartburn, and Low Stomach Acidity)
|1,000 mcg daily||[2 stars] Vitamin B12 may be beneficial for people with delayed emptying of the stomach in association with Helicobacter pylori infection and low blood levels of vitamin B12.|
(Sickle Cell Anemia)
|Consult a qualified healthcare practitioner||[2 stars] People with sickle cell anemia may be deficient in vitamin B12. Intramuscular vitamin B12 injections improved symptoms for patients in one study.|
|Refer to label instructions||[1 star] Vitamin B12 is found almost exclusively in foods of animal origin, which are restricted on the PKU diet. Supplementing with vitamin B12 may correct a deficiency.|
|Refer to label instructions||[1 star] Supplementing with vitamin B12 can counteract the nutrient deficiency that often occurs as a result of malabsorption.|
(Indigestion, Heartburn, and Low Stomach Acidity)
|Refer to label instructions||[1 star] For people who have inadequate absorption of vitamin B12 due to low stomach acid, supplementing with vitamin B complex can help correct a deficiency.|
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2014.