Increased levels of Homocysteine above 14 µmol/ have been shown to double the risk for onset of Alzheimer’s. Good news is that elevated levels of homocysteine can be reversed. These results add AD to the list of risks associated with high homocysteine levels, which have also been linked to heart disease and stroke. Since homocysteine levels are related to plasma levels of vitamins-folic acid, B6, and B12-related to homocysteine levels, elevated homocysteine levels can effectively be reversed with vitamin supplementation or ore agressively with a script such as Metanx.