Featured Research

from universities, journals, and other organizations

Research Ties Vitamin B12 And Folate Deficiencies With Alzheimer's Disease

Date:
May 8, 2001
Source:
American Academy Of Neurology
Summary:
People with low levels of B12 or folate may have a higher risk of developing Alzheimer's disease, according to a study in the May 8 issue of Neurology, the scientific journal of the American Academy of Neurology. The long-range Swedish study of persons 75-years-old and older found that more than half (46 out of 78) of those diagnosed with dementia had both low levels of vitamin B12 or folate and Alzheimer's type dementia.

ST. PAUL, MN – People with low levels of B12 or folate may have a higher risk of developing Alzheimer's disease, according to a study in the May 8 issue of Neurology, the scientific journal of the American Academy of Neurology.

The long-range Swedish study of persons 75-years-old and older found that more than half (46 out of 78) of those diagnosed with dementia had both low levels of vitamin B12 or folate and Alzheimer's type dementia.

Study authors theorized that vitamin B12 or folate deficiencies affect Alzheimer's disease by influencing neurotransmitters or the levels of the amino acid homocysteine in the body. Either vitamin B12 or folate deficiency can increase homocysteine levels. Homocysteine has a neurotoxic effect that could lead to cell death or neurological conditions such as Alzheimer's disease.

"In our study, we found that low levels of either of these two vitamins were related to an increased Alzheimer's disease risk," said study co-author Hui-Xin Wang. "Monitoring B12 and folate levels is important in order to avoid unfavorable conditions, even for those elderly people who are quite healthy in terms of cognition."

For more than thirty years, researchers have observed low vitamin B12 and folate levels in elderly people, according to Wang. It had also been previously theorized that this vitamin deficiency might be tied to neurological or psychiatric disorders. This study breaks new ground by connecting these deficiencies with Alzheimer's disease.

Vitamins B12 and folate (a form of water-soluble vitamin B) are found in common foods. Vitamin B12 is naturally found in animal foods including fish, milk and milk products, eggs, meat, and poultry. Leafy greens such as spinach and turnip greens, dry beans and peas, fortified cereals and grain products, and some fruits and vegetables are rich food sources of folate.

Study data were pulled from a population-based longitudinal study in Sweden called the Kungsholmen Project. A random sample of 370 non-demented persons, age 75 and older, and not treated with B12 or folate dietary supplements, was followed for three years to detect cases of Alzheimer's disease. Within the timeframe of the study, 78 people developed some form of dementia.

The American Academy of Neurology, an association of more than 17,000 neurologists and neuroscience professionals, is dedicated to improving patient care through education and research.

For more information about the American Academy of Neurology, visit its web site at http://www.aan.com.


Story Source:

The above story is based on materials provided by American Academy Of Neurology. Note: Materials may be edited for content and length.


Cite This Page:

American Academy Of Neurology. "Research Ties Vitamin B12 And Folate Deficiencies With Alzheimer's Disease." ScienceDaily. ScienceDaily, 8 May 2001. <www.sciencedaily.com/releases/2001/05/010508083559.htm>.
American Academy Of Neurology. (2001, May 8). Research Ties Vitamin B12 And Folate Deficiencies With Alzheimer's Disease. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2001/05/010508083559.htm
American Academy Of Neurology. "Research Ties Vitamin B12 And Folate Deficiencies With Alzheimer's Disease." ScienceDaily. www.sciencedaily.com/releases/2001/05/010508083559.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Xtreme Eating: Your Daily Caloric Intake All On One Plate

Xtreme Eating: Your Daily Caloric Intake All On One Plate

Newsy (July 30, 2014) The Center for Science in the Public Interest released its 2014 list of single meals with whopping calorie counts. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



    Save/Print:
    Share:

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile: iPhone Android Web
    Follow: Facebook Twitter Google+
    Subscribe: RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins