Vitamin B12, and Alzheimers Disease

Apparently, a deficiency of the former is often mistaken for the later:

When Is Alzheimer's Disease Not Alzheimer's? When It's Vitamin B12 Deficiency!

[...] Vitamin B12 deficiency becomes more and more common as people get older. With some researchers estimating that over 800,000 elderly in the US have undiagnosed deficiency, this is NOT a small problem. Even worse is that few clinicians know about vitamin B12 deficiency or are trained to look for its symptoms. Many elderly who should be screened for this simple vitamin deficiency are, instead, diagnosed with ‘incurable’ diseases that rob them of any possible quality of life. That Mental Changes from B12 Deficiency can look EXACTLY like dementia was noted in 1902! Since then, this topic has been studied many times, and it has even been shown that CAT Scans and MRI’s that show lesions and degeneration of the brain and spinal cord are often REVERSIBLE when these lesions are caused by vitamin B12 deficiency! Yet, using these modern techniques, the presence of brain and spinal cord abnormalities is almost always used as evidence for patients and families of the Irreversible nature of their disease- when that is not necessarily the truth at all! [...]

Read the whole thing. Makes you wonder how many times Alzheimer's is a misdiagnosis.