Vitamin C and vitamin E are two of the body's most important antioxidants — and both help defend the brain against free-radical damage. Here's why that matters as we age, and how to think about them sensibly.

Free radicals damage cell structures and genetic material, producing what's called oxidative stress. Over time, that oxidative stress is believed to contribute to brain aging and may play a role in Alzheimer's disease and other forms of dementia.

A measured word on Alzheimer's

Alzheimer's is a common brain disorder, most often appearing later in life, marked by progressive loss of memory and the ability to manage everyday living. Its exact cause isn't known, though it involves changes in a brain chemical called acetylcholine. Research on whether vitamins C and E can prevent it is genuinely mixed — some studies show meaningful benefit, others very little. The honest summary: these antioxidants appear to help to a degree, but they are not a cure or a guarantee, and more research is needed.

Where they fit in a root-cause approach

What I tell my patients is this: nutrients like C and E are supporting players in a much bigger picture. They help defend the brain from free-radical damage, support immune function, and aid healthy blood and oxygen flow to the brain — but they work best as part of an overall terrain that's well-nourished and low in inflammation.

Food-first is ideal: citrus, berries, and peppers for vitamin C; nuts, seeds, and leafy greens for vitamin E. Thoughtful supplementation has its place, but more isn't always better. As always, test rather than guess and personalize — what your body actually needs is rarely one-size-fits-all.