- With Mayo Clinic clinical neuropsychologist
Glenn Smith, Ph.D.read biographyclose window
Glenn Smith, Ph.D.Glenn Smith, Ph.D.
Dr. Glenn Smith is a board-certified clinical neuropsychologist who specializes in Alzheimer's disease.
Dr. Smith, a Lincoln, Neb., native, has been with Mayo Clinic since 1990 and works with neurologists, psychiatrists, internists, social workers and nurses involved in diagnosing and providing care for people with dementia and their families.
"For Alzheimer's disease, there is currently no cure," he says. "The best "medicine" for patient and family remains education and support. Hopefully, Mayo Clinic's Alzheimer's disease Web resources contribute to compassionate care and understanding for Alzheimer's families."
Dr. Smith is a professor of psychology at College of Medicine, Mayo Clinic, a division co-chair in the Department of Psychiatry and Psychology, and principal investigator of the Mayo Alzheimer's Disease Research Center Education and Information Transfer Core. He is past president of the American Board of Clinical Neuropsychology and the Clinical Neuropsychology Division of the American Psychological Association.
Risk factors (2)
- Alzheimer's: Can a head injury increase my risk?
- Oophorectomy (ovary removal): A risk factor for dementia?
- Sundowning: Late-day confusion
Tests and diagnosis (2)
- Rapidly progressing Alzheimer's: Something else?
- Alzheimer's test: Detection at the earliest stages
- Phantosmia: What causes olfactory hallucinations?
Treatments and drugs (3)
- Alzheimer's nose spray: New Alzheimer's treatment?
- Folic acid supplements: Can they slow cognitive decline?
- Vitamin B-12: Can it improve memory in Alzheimer's?
Lifestyle and home remedies (2)
- Music and Alzheimer's: Can it help?
- Alzheimer's: Can a Mediterranean diet lower my risk?
Alternative medicine (5)
- Huperzine A: Can it treat Alzheimer's?
- Axona: Medical food to treat Alzheimer's
- Phosphatidylserine supplements: Can they improve memory?
- see all in Alternative medicine
Coping and support (1)
- Elder care for Alzheimer's: Choosing a provider
- Alzheimer's prevention: Does it exist?
- Alzheimer's disease: Can exercise prevent memory loss?
- Benefits of being bilingual: Delay Alzheimer's?
Vitamin B-12: Can it improve memory in Alzheimer's?
Can vitamin B-12 improve memory in Alzheimer's disease?
from Glenn Smith, Ph.D.
Vitamin B-12 helps maintain healthy nerve cells and red blood cells. A vitamin B-12 deficiency — most common in older adults and vegetarians — can cause various signs and symptoms, including memory loss. In such cases, vitamin B-12 supplements can help improve memory.
In the absence of a vitamin B-12 deficiency, there's no evidence that vitamin B-12 supplements enhance memory for people who have Alzheimer's disease. Still, vitamin B-12 remains an important part of a healthy diet.
Vitamin B-12 is found naturally in foods that come from animals, including fish, meat and poultry. Many breakfast cereals are fortified with vitamin B-12 as well. If you're concerned that you're not getting enough vitamin B-12 or other specific nutrients, consult your doctor — especially if you're an older adult or a vegetarian.Next question
Music and Alzheimer's: Can it help?
- Dietary supplement fact sheet: Vitamin B12. Office of Dietary Supplements. http://ods.od.nih.gov/factsheets/vitaminB12/. Accessed Nov. 8, 2010.
- Van Dyck CH, et al. Cognitive and psychiatric effects of vitamin B12 replacement in dementia with low serum B12 levels: A nursing home study. International Psychogeriatrics. 2009;21:138.
- Lin YT, et al. Regular vitamin B12 supplementation among older Chinese men in a veterans care home in Taiwan. Archives of Gerontology and Geriatrics. 2009;49:186.
- Hvas AM, et al. No effect of vitamin B-12 treatment on cognitive function and depression: A randomized placebo controlled study. Journal of Affective Disorders. 2004;81:269.