Fermented Foods, Fibre, and Immunity | Justin Sonnenburg, PhD, and Christopher Gardner, PhD

The Proof with Simon Hill

Simon Hill

Nutrition, Education, Self-improvement, Health & Fitness

4.9 • 3.1K Ratings

🗓️ 7 February 2022

⏱️ 97 minutes

🔗️ Recording | iTunes | RSS

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Summary

In Episode #191, I sat down with Stanford University Professors Dr Christopher Gardner and Dr Justin Sonnenburg to talk about fermented foods, fibre, gut health, and immunity. This conversation was organised following the results of their latest randomised controlled trial, ‘gut-microbiota-targeted diets modulate human immune status’, which was published in Cell Press in 2021. Listen to this episode to find out about what defines a healthy microbiome, what we can learn from studying the microbiomes of traditional populations such as the Hadza tribe, and so much more. Justin and Christopher also share the mission behind their study of fibre and fermented foods, what they found (including their findings regarding fibre intake and the effectiveness of probiotics), and the key takeaways. For more from Christopher Gardner, check out Episodes #145, #167, and #228. For more from Justin Sonnenburg, check out Episode #202. For more insights and reflections, visit The Proof website for the full show notes. Enjoy, friends. Simon Want to support the show? The best way to support the show is to use the products and services offered by our sponsors. To check them out, and enjoy great savings, visit theproof.com/friends. You can also show your support by leaving a review on the Apple Podcast app and/or sharing your favourite episodes with your friends and family. Simon Hill, MSc, BSc (Hons) Creator of theproof.com and host of The Proof with Simon Hill Author of The Proof is in the Plants Watch the episodes on YouTube or listen on Apple/Spotify Connect with me on Instagram, Twitter, and Facebook Download my complimentary two-week meal plan and high protein Plant Performance recipe book

Transcript

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0:00.0	Let me share with you the results of a new study published in the Journal of Senses,
0:08.4	comparing the accuracy of six different fitness trackers worn by healthy adults, including
0:13.0	Woop, Garmin, Aura, Polar and Apple.
0:17.2	The study was specifically interested in looking at the validity of measurements for sleep,
0:22.1	heart rate and heart rate variability, a marker of recovery.
0:25.7	Importantly, this was an independent study by a group of researchers in Australia, with
0:30.7	no funding or input from the fitness tracker companies.
0:34.9	So what's validity?
0:36.4	Well, compared to gold standard testing, which can be expensive, inaccessible and time-consuming,
0:42.3	such as an ECG for heart rate and heart rate variability, and polysomnography for sleep,
0:47.8	how accurately do these fitness trackers measure the things they claim to?
0:52.5	Not adding the fitness trackers against these gold standard tests is exactly what this study
0:56.9	set out to do.
0:58.9	So what did they find?
1:00.3	For measuring heart rate and heart rate variability, Woop performed best of all six trackers, with
1:05.5	99% accuracy for heart rate and 99.7% accuracy for heart rate variability.
1:11.7	And along with Aura and Somfit, Woop performed the best for accurately measuring the different
1:15.8	stages of sleep overnight, light, deep and REM sleep.
1:20.8	While you really cannot go wrong with any of these devices, haven't been wearing Woop
1:24.4	for three plus years now, it's nice to know that the data it's providing is valid.
1:28.8	That is, the Woop fitness tracker is actually measuring what it says it is, and thus the
1:33.1	changes I'm making to my lifestyle are therefore hopefully more effective in improving my health
	...

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