Chapter 11 Vitamin C and the Brain
The brain requires vitamin C to metabolize fuel substrates and synthesize neurotransmitters, regulate their release, and modify their actions. Vitamin C also protects the brain from oxidative damage. Clinical studies do not provide strong evidence that vitamin C deficiency directly impairs brain fun...
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| フォーマット: | Online |
| 言語: | 英語 |
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Taylor & Francis
2023
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| 主題: | |
| オンライン･アクセス: | https://library.oapen.org/handle/20.500.12657/75335 |
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| 要約: | The brain requires vitamin C to metabolize fuel substrates and synthesize neurotransmitters, regulate their release, and modify their actions. Vitamin C also protects the brain from oxidative damage. Clinical studies do not provide strong evidence that vitamin C deficiency directly impairs brain function but rather suggest that the fatigue, mood disturbance, and cognitive dysfunction sometimes associated with vitamin C deficiency are due to peripheral tissue damage, with possibly an exaggerated emotional response to it. Severe brain injury drastically depletes the cerebrospinal fluid of vitamin C; clinical trials of high-dose intravenous vitamin C are strongly warranted for this condition. The very limited clinical trial evidence available does not demonstrate that vitamin C supplementation slows the progression of dementia or improves clinical outcomes after an acute ischemic stroke. Hypovitaminosis C is common in people with severe mental illness; it should be treated. A few clinical trials have been carried out of low-pharmacologic doses of vitamin C (alone or with other nutrients) as adjunctive therapy in patients with chronic stable schizophrenia or depression, with inconsistent results. There is plausible but inclusive evidence that continuous supplementation with a combination of several micronutrients, including vitamin C, may have cognitive benefits in some people even if they lack diagnosed vitamin deficiencies. |
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