Dr Norman Swan

speaker

1,216 appearances 8 recordings 1 series first heard Jul 2026 last heard 6d ago

Dr Norman Swan’s voice in public audio — every appearance, attributed to the second.

Trend

recordings per month · last 12 months

Recordings per month over the last 12 months — 8 in all, peaking in Sep 2026 with 3.

Appearances

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What's That Rash? · Eat the rainbow: what can food colour tell us? · 15 Sep 2026 podcast

adds to the bioavailability of these compounds that we're about to talk about.

You can get a lot of things, but the one that's been best researched is lycopin.

Which is a bioactive compound, it is an antioxidant, and when we say an antioxidant

We're talking about a substance which counteracts the toxic effect of oxygen on our body.

Well, yes, we do a deal with the devil.

We have to have oxygen to live.

But when you breathe in oxygen and it gets used in the tissues, the oxygen comes as two oxygen atoms stuck together or two, and then it can break off into two oxygen atoms.

And they are highly reactive.

And they want to st they don't like being uh r highly reactive.

They want to stick to something so they stabilize.

So in the environment, if you've got bare metal, bare iron,

It'll stick to the iron and oxidize the iron, and that's rust.

And what we're talking about here in the body is effectively biological rust.

So fibrosis, changes to the way the immune system works, aging of tissues, all sorts of things are associated with oxidation.

Atherosclerosis, the process of our arteries becoming blocked.

So you get the cholesterol going into the cell.

Becoming oxidized, inducing an immune reaction.

So oxidation is incredibly important just with atherosclerosis and coronary heart disease.

It's probably important with dementia as well.

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