Protein amount, quality and timing | Dr Luc van Loon

The Proof with Simon Hill

Simon Hill

Nutrition, Education, Self-improvement, Health & Fitness

4.9 • 3.1K Ratings

🗓️ 5 January 2026

⏱️ 107 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

I sit down with Dr Luc van Loon to unpack what really happens to protein in the body, from digestion to muscle and organ tissue. We explore why muscle protein synthesis is often misunderstood, how inactivity drives muscle loss, and what the research actually says about protein needs across the lifespan. What We Cover Ice baths and their impact on muscle adaptation Protein absorption, muscle protein synthesis, and common myths Anabolic resistance and the role of physical activity Protein needs in ageing, illness, and recovery Plant based versus omnivorous diets and muscle health A deep dive into protein science, ageing, and what matters most for preserving muscle and function. Intro (00:00) How Protein Research Evolved in Exercise Physiology (02:07) How Muscle Protein Synthesis Actually Works (Mechanisms Explained) (04:01) Tracing Amino Acids From Food Into Muscle Tissue (07:00) Biggest Myths About Protein Intake (What the Public Gets Wrong) (10:02) Protein Digestion, Absorption, and Where Amino Acids Go (17:25) Anabolic Resistance Explained: Why Muscle Response Declines With Age (38:16) How Much Protein Do You Really Need? Optimal vs Adequate Intake (46:41) How Protein Digestion Studies Are Designed (And Their Limitations) (53:22) Omnivore vs Vegan Diets: Muscle Protein Synthesis Compared (1:00:12) Protein Quality vs Quantity: What Actually Builds Muscle (01:08:52) Protein Powders, Isolates, and Supplements: Do They Help? (01:11:08) Protein Requirements (01:15:08) IGF1, Protein Consumption and Cancer (01:16:32) Amino Acids Explained: How the Body Rebuilds Protein From Steak (01:22:34) Anabolic Response Explained: When Amino Acids Actually Build Muscle (01:28:59) Supplements and Muscle Protein Synthesis (01:30:35) Muscle Protein Turnover, Aging, and Preventing Muscle Loss (01:38:59) 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 support the show by leaving a review on the Apple Podcast app and sharing your favourite episodes with friends and family. This episode is brought to you by: 38TERA Consider 38TERA's DMN prebiotic supplement a daily multivitamin for your gut. Formulated by yours truly and gastroenterologist Dr Will Bulsiewicz. Use code THEPROOF for a discount at checkout. Function Health Take charge of your health with advanced blood testing and personalised insights. Function Health offers a practical way to track key health markers such as cholesterol, blood sugar, and more. Learn more and join at functionhealth.com/simonhill for a $25 credit toward your membership. Only available to those living in the United States. Pique Tea Pique's Nandaka provides sustainable, all-day energy and makes you feel like you’re doing something good for your body! Try Pique and get 20% off FOR LIFE when you shop exclusively at Piquelife.com/simon. WHOOP Whoop, the most advanced fitness and health wearable available. Your personalised fitness and health coach to recover faster, sleep better, and train smarter. Claim your first month free on join.whoop.com/simon. Simon Hill, MSc, BSc (Hons) Creator of theproof.com Host of The Proof with Simon Hill Author of The Proof is in the Plants Subscribe & Connect: YouTube Apple Podcasts Spotify Instagram: @simonhill Twitter: @theproof Facebook: The Proof with Simon Hill Nourish your gut with my Plant-Based Ferments Guide and download my Two-Week Meal Plan.

Transcript

Click on a timestamp to play from that location

0:00.0	Today I'm joined by someone who very rarely gives interviews and someone that I've admired
0:06.1	from far for a long time. Professor Luke Van Loon, one of the world's leading scientists
0:12.0	in exercise physiology, protein metabolism, and skeletal muscle health. Luke is a professor
0:18.5	at Maastricht University in the Netherlands, and he leads the renowned M3
0:23.1	research group, where his team investigates how nutrition and exercise influence muscle
0:28.6	performance, aging, and chronic disease.
0:32.0	His work has shaped much of what we understand about protein synthesis, muscle adaptation,
0:37.0	and metabolic health. In this episode,
0:38.8	we walk through and debunk many of the biggest protein myths circulating today. We explore how
0:45.9	much protein people actually need, whether the source or distribution matters, and whether
0:52.3	older adults can build muscle as effectively as younger people.
0:56.5	Luke also shares new findings from his lab, including unpublished data comparing vegan and
1:02.1	omnivorous diets in older populations.
1:05.1	I think you're going to absolutely love this conversation, especially if like me you enjoy understanding the science
1:12.2	that underpins protein recommendations.
1:15.9	Without further ado, here is my conversation with Dr. Luke Van Loon.
1:24.9	I want to focus today's conversation on protein. I know that your research spans more than
1:30.3	protein. And we were talking earlier, your research started in exercise physiology, but we could easily
1:38.3	spend three hours talking just about protein, and we can save some space for another conversation.
1:44.3	When it comes to protein and your research and just the research in general over the last 20 years,
1:51.8	are there any...
1:52.6	Can you just not say 20 years?
	...

Please login to see the full transcript.

Previous episode | Next episode

Disclaimer: The podcast and artwork embedded on this page are from Simon Hill, and are the property of its owner and not affiliated with or endorsed by Tapesearch.

Generated transcripts are the property of Simon Hill and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.