Professor Luke O'Neill
speaker
1,535 appearances
7 recordings
2 series
first heard Apr 2026
last heard 3 Sep
Professor Luke O'Neill’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 7 in all, peaking in May 2026 with 3.
Appearances
Useful for that.
And then vitamin K, an unusual one, essential for one thing only: blood clotting.
Vitamin K is used to help blood to clot.
If you low vitamin K, your blood can't clot.
Now there's an amazing arrange of things that vitamins do as a group, very complicated.
And the wonderment of this for biochemists was great to discover all these vitamins and figure out what they do in the body with all these different things.
It's a great example, I suppose, of aspiring.
Asking a question, why would you get scurvy?
Oh, it's vitamin C.
And how does vitamin C work?
We now know how they all work, by the way.
I won't go into the details, but the exact mechanism is understood.
Vitamin C uhows collagen to cross link and form these meshes.
There's an enzyme involved in that.
Proly hydroxylase.
That enzyme uses vitamin C.
That's the biochemistry behind that.
Let's get on though to taking supplements, right?
Overall, you don't need them.
Let's start with that fact.
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