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  2. Toxic and nutritional optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Toxic_and_nutritional...

    The predominant cause of nutritional optic neuropathy is thought to be deficiency of B-complex vitamins, particularly thiamine [2] (vitamin B 1), cyanocobalamin (vitamin B 12) and recently copper. [3] Deficiency of pyridoxine (vitamin B 6), niacin (vitamin B 3), riboflavin (vitamin B 2), and/or folic acid also seems to play a role. Those ...

  3. Vitamin D and neurology - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_and_neurology

    Studies suggest that low vitamin D levels could play a role in PD, and in one case report, vitamin D supplements lessened parkinsonian symptoms. In a study of vitamin D receptor knockout mice, mice without VDR exhibited motor impairments similar to impairments seen in patients with Parkinson's disease. [7]

  4. Megavitamin-B6 syndrome - Wikipedia

    en.wikipedia.org/wiki/Megavitamin-B6_syndrome

    Symptoms: Peripheral sensory neuropathy: Usual onset: Gradual onset with slow progression, in the usual case of chronic vitamin B 6 supplementation. [3] Duration: Usually, but not always, resolves within six months from the cessation of vitamin B 6. [4] Causes: Chronic vitamin B 6 supplementation, or acute parenteral or oral over‐dosages of ...

  5. Toxic encephalopathy - Wikipedia

    en.wikipedia.org/wiki/Toxic_encephalopathy

    Toxic encephalopathy is a neurologic disorder caused by exposure to neurotoxic organic solvents such as toluene, following exposure to heavy metals such as manganese, as a side effect of melarsoprol treatment for African trypanosomiasis, adverse effects to prescription drugs, or exposure to extreme concentrations of any natural toxin such as cyanotoxins found in shellfish or freshwater ...

  6. Drusen - Wikipedia

    en.wikipedia.org/wiki/Drusen

    Drusen, from the German word for node or geode (singular, "Druse"), are tiny yellow or white accumulations of extracellular material that build up between Bruch's membrane and the retinal pigment epithelium of the eye. The presence of a few small ("hard") drusen is normal with advancing age, and most people over 40 have some hard drusen. [1]

  7. Vitamin D deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_deficiency

    Vitamin D toxicity usually results from taking supplements in excess. [55] Hypercalcemia is often the cause of symptoms, [55] and levels of 25(OH)D above 150 ng/mL (375 nmol/L) are usually found, although in some cases 25(OH)D levels may appear to be normal. Periodic measurement of serum calcium in individuals receiving large doses of vitamin D ...

  8. Vitamin B12 deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12_deficiency

    Each of those symptoms can occur either alone or with others. Vitamin B 12 is essential for the development of the brain. Its deficiency can cause neurodevelopmental problems which can be partly reversible with early treatment. [27] Only a small subset of dementia cases have been found to be reversible with vitamin B 12 therapy. [28]

  9. Nutritional neuroscience - Wikipedia

    en.wikipedia.org/wiki/Nutritional_neuroscience

    Poor diet in early childhood affects the number of neurons in parts of the brain. [1]Nutritional neuroscience (neuronutrition) is the scientific discipline that studies the effects various components of the diet such as minerals, vitamins, protein, carbohydrates, fats, dietary supplements, synthetic hormones, and food additives have on neurochemistry, neurobiology, behavior, and cognition.