3. Possible reduction in ischemic stroke risk
Ischemic stroke, caused by blood clots blocking cerebral arteries, accounts for the majority of stroke cases. Some evidence suggests vitamin E’s antioxidant properties may slightly reduce ischemic stroke risk by about 10%. The antioxidant effect could protect blood vessels from oxidative damage and improve endothelial function.
However, this potential benefit is modest and not consistent across all studies. The protective effect may be more relevant for individuals with certain risk profiles, but it does not outweigh the concerns regarding hemorrhagic stroke risk.
4. Neutral effect on total stroke
When considering all stroke types combined, large randomized controlled trials and meta-analyses show no significant protective effect from vitamin E supplementation. The reduction in ischemic stroke risk appears to be balanced by the increased risk of hemorrhagic stroke, resulting in a neutral overall impact on total stroke incidence.
For seniors focused on stroke prevention, this means that taking high-dose vitamin E supplements may not provide the expected broad protection against stroke.
5. No cardiovascular prevention in high-risk groups
Among seniors with pre-existing cardiovascular risk factors such as diabetes, hypertension, or vascular disease, vitamin E supplementation has not demonstrated a reduction in major cardiovascular events. Clinical trials like the HOPE study found no benefit in heart attack or stroke prevention in these populations.
In some extended follow-ups, there was even a trend toward higher heart failure risk, further questioning the routine use of vitamin E supplements for cardiovascular protection in high-risk seniors.
