There is now a substantial amount of research that shows that the toxic protein homocysteine, easily measurable in blood plasma, not only causes the kind of damage that is the hallmark of Alzheimer’s, but that one’s homocysteine level is an excellent predictor of risk. The critical point is to detect any decrease in cognitive function as early as possible and, if some decline, measure homocysteine. Of course, there’s no harm in testing your homocysteine anyway, which I recommend for anyone over 50, along with doing the Cognitive Function Test. Also marking Dementia Awareness Week, my new paper entitled ‘The Prevention of Memory Loss and Progression to Alzheimer’s Disease with B Vitamins, Antioxidants and Essential Fatty Acids: A Review of the Evidence’ is being published in the Journal of Orthomolecular Medicine today. To read it click here and open the article entitled Nutrients and Alzheimer's Disease Prevention 2011: Review. If you’re concerned about developing Alzheimer’s take a look at my book Alzheimer’s Prevention Plan.