Protein vs Fibre: Do You Have to Pick a Side? | Dr Carlene Starck
Social media has turned protein and fibre into rival camps - one side says we are all under-eating protein, the other says we are wrecking our guts by skipping fibre. So who is right? Dr Cliff Harvey sits down with protein biochemist and nutrition scientist Dr Carlene Starck to weigh the evidence and work out what should actually go on your plate.
In this episode we cover:
What the fibre meta-analyses show, and why randomised trials of isolated fibre undercut the "it's just residual confounding" argument
Why protein and fibre ended up pitted against each other
Is fibre essential? What "non-essential" does and doesn't mean
If you could only prioritise one, which would a protein scientist choose (and why)
Protein vs fibre for satiety, and what a week on carnivore taught Carlene
Why individual context, mental health and food culture matter more than dietary dogma
Carlene's New Zealand and Australian research showing nutrient-dense diets can cost less
A simple plate model, eating for colour, and the biggest myths about protein and fibre
Chapters
00:00 Intro
00:12 The protein vs fibre debate
01:35 What the fibre research shows
11:29 Meet Dr Carlene Starck
12:31 From myostatin to protein misfolding
16:53 Why protein and fibre got pitted against each other
20:13 Is fibre essential?
27:06 Protein or fibre: if you had to pick one
31:32 Satiety: protein vs fibre
33:45 A week on carnivore
35:27 Diet, mental health and individual response
40:29 The "second stomach" and enjoying food
44:21 Food, culture and community
47:20 Why dietary dogma doesn't serve people
48:54 Ayurveda and individual constitutions
51:21 Can nutrient-dense eating cost less?
56:41 A simple plate model: palms, fists and colour
58:20 Is there a fibre-to-carb target?
1:01:19 The Hadza, and why oral health matters
1:04:18 Myth busting: protein
1:05:37 Myth busting: fibre
1:07:44 When fibre supplements make sense
1:10:47 Finding the diet that works for you
1:13:39 Cliff's key takeaways
1:15:34 The Practitioner's Roadmap
About Dr Carlene Starck
Dr Carlene Starck is a protein biochemist and nutrition scientist with more than 20 years in nutrition research, protein and amino acid metabolism, and science communication. She holds a PhD in biochemistry from Massey University and is affiliated with the Riddet Institute. Through Starck Science she helps food and nutrition brands turn rigorous protein science into clear strategy.
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