I still think zinc *has* to be a piece of the puzzle given studies like this one, for one example among many..,
quote]3. Clinical Signiﬁcance of Serum Zinc Levels in Cerebral Ischemia (2010)http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3042622/
"Overall, out of the 224 patients analyzed (mean age 67 years), 35.7% patients had low zinc levels (65mcg/dL
). Patients with stroke (n = 152) were more likely to have low zinc levels (OR = 2.62, CI 1.92–3.57, P < .003) compared to patients with TIA (n = 72) [transient ischemic attack ie mini-stroke].[/quote]http://en.wikipedia.org/wiki/Cerebral_hypoxia
Hypemic hypoxia. Reduced brain function is caused by inadequate oxygen in the blood despite adequate environmental oxygen. Anemia and carbon monoxide poisoning are common causes of hypemic hypoxia.
Ischemic hypoxia (a.k.a. stagnant hypoxia). Reduced brain oxygen is caused by inadequate blood flow to the brain. Stroke, shock, and heart attacks are common causes of stagnant hypoxia. Ischemic hypoxia can also be created by pressure on the brain. Cerebral edema, brain hemorrhages and hydrocephalus exert pressure on brain tissue and impede their absorption of oxygen.
wonder if there's any research out there on zinc deficiency anemia hypoxia ... found one case report from 2012 involving iron deficiency anemia..
Acute Ischemic Stroke Secondary to Iron Deficiency Anemia: A Case Reporthttp://www.hindawi.com/crim/nm/2012/487080/