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Alexandra Johnstone

Alexandra Johnstone

Professor of Human Nutrition at the Rowett Institute, University of Aberdeen, researching appetite control, chrononutrition and food insecurity.

Jul 23, 2026

44:09
Is there a universally accepted definition? Let's
44:13
cover that first.
44:14
So the answer to that is no.
44:16
So SACEN is the government's body, which is Scientific Advisory Committee for Nutrition, that looked at ultra-processed foods.
44:24
They've looked at them twice.
44:27
And they have said that there are different definitions in use globally for But the one that is most commonly used is the NOVA category.
44:37
NOVA is not an acronym, it's just N-O-V-A.

22 MINS LATER

66:21
pills so on so forth we've not spoken about fiber much in the episode just yet so so so maybe we can do a little bit of a fiber deep dive what is it why is it important how important is it is it nuanced like should everyone just eat more fiber or
3:59
If you skip breakfast, what health problems can arise, Alex?
4:04
Breakfast skipping is interesting because my own work would tend to suggest and that sort of observational, large-scale epidemiological studies would also support this, that people who have a regular breakfast are actually leaner.
4:22
And my own work would tend to suggest that having your largest meal of the day in the morning period gives you a much better appetite control, which then means it's much easier to control food intake later in the day.
4:41
So really, I am supporting the meme, breakfast like a king and dine like a pauper.

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