Vitamin B12 用于 Nutritional Deficiency Cognitive Impairment
AA study of 202 people with cognitive impairment and low B12 levels found supplementation improved cognition in 84% of patients and memory/attention scores in 78%. Subclinical low-normal B12 is associated with increased risk of neurodegenerative conditions.
结论
A study of 202 people with cognitive impairment and low B12 levels found supplementation improved cognition in 84% of patients and memory/attention scores in 78%. Subclinical low-normal B12 is associated with increased risk of neurodegenerative conditions.
Key Study Findings
研究人群: Elderly participants aged 60+ from NHANES 2011-2014
研究人群: Adult stroke survivors (20 trials + 14 observational)
研究人群: Adults with vitamin B12 deficiency
研究人群: Pregnant women (review)
研究人群: Early Parkinson's disease patients
研究人群: Older adults and at-risk B12 deficient individuals
Key Statistics
25
研究数量
3500
受试者
Positive
等级
Referenced Papers
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
常用剂量
- general:
- 2.4 mcg/day (RDA)
- deficiency:
- 1,000-2,000 mcg/day
- cognitivesupport:
- 500-1,000 mcg/day
上限： No established UL (water-soluble, low toxicity)
研究中使用的剂量
| 剂量 | 持续时间 | 效果 | N |
|---|---|---|---|
| None | -- | Positive | 2582 |
| None | -- | Mixed | -- |
| None | -- | Mixed | -- |
| None | -- | Positive | -- |
| Vitamin B12 (measured, not supplemented) | -- | Positive | -- |
| >5 mg/day | -- | Negative | -- |
| None | -- | Positive | -- |
| None | -- | Positive | -- |
最佳服用时间： Morning, on empty stomach for better absorption (sublingual)
Safety & Side Effects
已报告的副作用
- ⚠ Generally very well-tolerated
- ⚠ Rare: acne-like eruptions at high doses
- ⚠ Injection site reactions (injectable form)
已知相互作用
- ● Metformin (reduces B12 absorption)
- ● Proton pump inhibitors (reduce B12 absorption)
- ● Colchicine (reduces B12 absorption)
可耐受最高摄入量： No established UL (water-soluble, low toxicity)
在开始服用任何补充剂之前，请务必咨询您的医疗保健提供者。
Frequently Asked Questions
Does Vitamin B12 help with Nutritional Deficiency Cognitive Impairment?
How much Vitamin B12 should I take for Nutritional Deficiency Cognitive Impairment?
Are there side effects of Vitamin B12?
How strong is the evidence for Vitamin B12 and Nutritional Deficiency Cognitive Impairment?
Related Evidence
其他成分用于 Nutritional Deficiency Cognitive Impairment
Vitamin B12 用于其他健康状况
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