About My Health Careers Internship MedBlogs Contact us

Lack of Vitamin D Linked to Higher Risk of Dementia

by Bidita Debnath on August 7, 2014 at 11:42 PM
Font : A-A+

 Lack of Vitamin D Linked to Higher Risk of Dementia

Older people who do not get enough vitamin D face a much higher risk of Alzheimer's disease or dementia, the largest study of its kind on the topic said.

People get vitamin D from sunlight and from oily fish like salmon, tuna or mackerel, as well as milk, eggs and cheese. It is also available in supplement form.


Reporting in the journal Neurology, international researchers found that people who were severely deficient in vitamin D were more than twice as likely to develop dementia and Alzheimer's disease as people who got enough.

The findings were based on a study of 1,658 adults aged 65 and over, who were healthy and able to walk without assistance.

The participants were followed for six years. By that point, 171 participants had developed dementia and 102 had Alzheimer's disease.

Those who were moderately deficient in vitamin D had a 53 percent increased risk of developing dementia of any kind. Those who were severely deficient saw their risk increase to 125 percent over those with adequate levels of vitamin D.

Similar numbers were noted for Alzheimer's disease: those who were moderately deficient were 69 percent more likely to develop this type of dementia, and the severely deficient were 122 percent more likely to get Alzheimer's.

"We expected to find an association between low vitamin D levels and the risk of dementia and Alzheimer's disease, but the results were surprising ?- we actually found that the association was twice as strong as we anticipated," said lead author David Llewellyn at the University of Exeter Medical School.

"Clinical trials are now needed to establish whether eating foods such as oily fish or taking vitamin D supplements can delay or even prevent the onset of Alzheimer's disease and dementia."

He added that the study stops short of showing whether or not vitamin D deficiency causes dementia, only that it shows there is a link that deserves further research.

Some 44 million people worldwide have dementia, a number that is expected to triple by 2050.

About one billion around the globe are thought to have low vitamin D levels.

The elderly can be particularly vulnerable to such a deficiency because their skin is less adept at converting sunlight into vitamin D.

Source: AFP

News A-Z
News Category
What's New on Medindia
First-Ever Successful Pig-To-Human Kidney Transplantation
World Osteoporosis Day 2021 -
Spirituality and Mental Health
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Calcium and Vitamin Supplements Rickets Vitamin Supplements Vitamin C / Ascorbic acid Vitamin B6 Vitamin B9 Vitamin B-12 Vitamin-F Dandy Walker Syndrome Undetected Nutrient Deficiencies: the Cause of Ill Health 

Recommended Reading
Vitamin D Deficiency Increases Risk of Schizophrenia Diagnosis: Study
Individuals with vitamin D deficiency are twice as likely to be diagnosed with schizophrenia as ......
High Levels of Vitamin D Improve Survival Chances in Bowel Cancer
The chances of bowel cancer patients surviving the disease are high among patients who have high ......
Vitamin D Supplements Can Treat High Blood Pressure
A new study has shown that vitamin D deficiency can lead to high blood pressure (hypertension)....
Vitamin D Deficiency Could Lead to Hypertension
Low vitamin D levels have a causal role in the development of high blood pressure (hypertension), .....
Calcium and Vitamin Supplements
Calcium and vitamin supplements are taken to provide the body with the ''required'' nutrients. Calci...
Dandy Walker Syndrome
Dandy-Walker syndrome is a brain malformation with symptoms of increased intracranial pressure like ...
Encyclopedia section of medindia explains in brief about Rickets...
Undetected Nutrient Deficiencies: The Cause of Ill Health
Micronutrient and antioxidant deficiencies are most common and go unnoticed. They are the root cause...
Vitamin B-12
Vitamin B-12 is also known as cobalamine or cyanocobalamine, owing to the presence of the metal, cob...
Vitamin B6
Vitamins play an equally important part in the synthesis of neurotransmitters. Neurotransmitters in ...
Vitamin B9
Vital info about vitamin B9, its molecular structure, dietary sources, beneficial aspects, symptoms ...
Vitamin C / Ascorbic acid
Vital info about vitamin C, its molecular structure, dietary sources, beneficial aspects, symptoms o...
Vitamin Supplements
Easy to understand info & tips with diagrams about vitamin supplements like vitamin C, B6, B9 & B12....
Essential fatty acids - omega 3 and omega 6 are sometimes referred to as Vitamin F. The body is not...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use