Magnesium Status and Dementia: Is There a Link ?

Magnesium and DementiaA new study published in Neurology, shows people with either low or high blood levels of Magnesium may have a higher risk of developing dementia.

Approximately 9,500 individuals participated in this prospective study.  Participants with an average age of 65 who did not have dementia were followed for an average of 8 years.  Serum Magnesium levels were measured at the start of the study.  Results were adjusted for variables like alcohol intake, body mass index, smoking status and kidney function, which may affect dementia risks and Magnesium levels.  Participants were divided into quintiles based on their serum Magnesium levels.

During this follow up period, over 800 individuals developed dementia.  Over 650 of these individuals were diagnosed with Alzheimer’s Disease. The incidence of dementia was found to be 30% higher in both the lowest blood Magnesium groups and the highest blood Magnesium groups.  Since this was an observational study only, no causality could be determined from the study outcomes.

There was however a few limitations on the way the study was set up.  First, Magnesium levels were only taken at the onset of the study, so changes in these blood levels may have occurred during the follow up period.  Second, blood levels of Magnesium may not be a reliable measure of total body Magnesium, meaning a person can have a normal serum Magnesium level and still have a Magnesium deficiency.  These limitations confirm that further research is needed.

The National Institute of Health (NIH) lists Magnesium as being involved in over 300 enzymatic processes in the body, such as helping to maintain normal nerve and muscle functions, keeping our bones strong as well as supporting a healthier immune response.  This important mineral is also necessary for supporting healthy blood pressure and blood sugar management.  70% – 80% of the population in the United States is not achieving the recommended intakes of daily Magnesium.

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Folic Acid and Dementia: Supplementation Benefits Elderly People with Mild Cognitive Decline

Folic Acid and Cognitive ImpairmentElderly people with mild cognitive impairment saw significant improvements in both cognitive performance and reduced inflammation when supplementing with 400 mcg of Folic Acid daily for a period of 12 months.

Over 150 seniors with mild cognitive impairment were randomly assigned to two groups.  One group received daily Folic Acid supplementation (400 mcg) and the other group was a conventional-treatment group.

Significant improvements in cognitive function were seen in the group supplementing with Folic Acid.  Additionally a significant reduction in levels of inflammatory cytokines was seen.  Peripheral inflammatory cytokines appear to be biomarkers for identifying individuals who may be at a greater risk of developing Alzheimer’s disease or dementia. Researchers believe looking at the role of inflammatory markers at the onset of dementia, before full clinical dementia syndrome has developed, is essential.  Researchers concluded that folic acid has significant memory enhancing and anti-inflammatory properties.

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Omega-3 Could Aid Alzheimer’s Prevention

Omega-3 and Alzheimer's DiseaseNew research finds individuals with high Omega-3 intakes have an increase in blood flow in the brain suggesting a link might exist between Omega-3 and Alzheimer’s Disease.

Over 160 randomly selected people participated in this trial.  These participants were taken from clinics and their brain function was studied using single photon emission computed tomography (SPECT).  SPECT measures blood perfusion in the brain.  128 regions of the brain were used to collect data on the correlation between Omega-3 blood levels as well as blood flow in the brain.  Resting-state scans were performed while participants were sitting in a dimly lit room with ambient noise and with their eyes open.  For on-task scans participants completed Continuous Performance Tests (CPTs) while the scans were performed.

Significant statistical relationships were found between EPA and DHA (Omega-3 Essential Fatty Acids)  levels in the blood and cerebral perfusion in various regions of the brain: areas known for memory encoding and retrieval (parahippocampal gyrus), areas for episodic memory, visuospatial processing, and aspects of consciousness (the right preuneus), and areas associated with bodily locomotion and posture (vermis subregion).

Researchers concluded that Omega-3 Essential Fatty Acids (EPA and DHA) may improve brain physiology which in turn leads to better cognitive reserves.

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Vitamins May Have Larger Role in Halting Brain Decline

Vitamin B is for BrainA new review claims folate and related B Vitamins play a role in slowing down brain function decline as well as playing a role in age-related depression.  These findings look at certain B Vitamins as being equally as successful in supporting the reduction in the risk of mental and cognitive disorders which occur with aging, as nutrients like Omega-3 Essential Fatty acids as well as polyphenols like Resveratrol.  Researchers believe these B Vitamins have the ability to improve the quality of life for the elderly.

Researchers concluded that folate and Vitamin B12 play essential roles in the long term management of dementia and age-related depression.  Inconsistencies of vitamin experiments coming from uncertain study design and methodology were identified by the research team.  B Vitamins and their role in supporting a healthier cognitive function in the aging process received more interest than B Vitamins and their role in age-related depression.

Over 46 million people worldwide experience some form of dementia and it is believed that this number will increase by over 65% by the year 2026.  Although the role of nutrients in supporting brain health is often underestimated nutrients are never fully discounted as being an effective means to aid in improving cognition in ageing.

Researchers are recommending that future studies use some form of imaging technology to confirm effective nutritional interventions.

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Could Folic Acid Decrease Dementia Risk?

Folic Acid and DementiaResearch suggests daily supplementation with folic acid may reduce the risk of having dementia in populations with low levels of this B vitamin and no program to fortify the diet with this nutraceutical.

Data from over 1,300 participants was analyzed.  Face to face interviews were done at the beginning of this study, the Three-City Study, to identify health related issues, socio demographic information and lifestyle characteristics.  All participants completed a 24 hour dietary recall and were dementia free at the time of the diet assessment.  Participants were followed for approximately 7 and ½ years.

Higher intakes of folate (folic acid) were inversely associated with the risk of dementia with approximately a 50% lower risk for participants with the highest folate levels compared to those with the lowest folate levels.

78 countries currently call for mandatory fortification programs for folic acid.  This was done to reduce and prevent neural tube defects in newborn babies.

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