Dr. Andrew Huberman: How Meal Timing Reshapes Metabolism

An 8-hour feeding window improved metabolic markers without calorie cuts. Huberman explains circadian meal timing and how to anchor yours for sleep and health.

Andrew Hubermanhost

Aug 28, 202538mWatch on YouTube ↗

EPISODE INFO

Released: August 28, 2025
Duration: 38m
Channel: Huberman Lab
Watch on YouTube: ▶ Open ↗

EPISODE DESCRIPTION

In this Huberman Lab Essentials episode, I explore intermittent fasting and time-restricted eating, highlighting the positive benefits for weight loss, metabolism, organ health, circadian rhythms and cellular repair. I explain a practical framework for designing a time-restricted eating window that aligns with your lifestyle, exercise schedule and social schedule. I also cover what breaks a fast, how to support fasting with tools like salt intake and post-meal walks, and the use of fasting-related supplements, including berberine and metformin. Episode show notes: https://go.hubermanlab.com/CcvKrMh Huberman Lab Essentials are short episodes focused on essential science and protocol takeaways from past full-length Huberman Lab episodes. Watch the full-length episode: https://youtu.be/9tRohh0gErM Watch more Huberman Lab Essentials episodes: https://youtube.com/playlist?list=PLPNW_gerXa4OGNy1yE-W9IX-tPu-tJa7S *Follow Huberman Lab* Instagram: https://www.instagram.com/hubermanlab Threads: https://www.threads.net/@hubermanlab X: https://twitter.com/hubermanlab Facebook: https://www.facebook.com/hubermanlab TikTok: https://www.tiktok.com/@hubermanlab LinkedIn: https://www.linkedin.com/in/andrew-huberman Website: https://www.hubermanlab.com Newsletter: https://www.hubermanlab.com/newsletter *Timestamps* 00:00:00 Intermittent Fasting, Time-Restricted Eating (TRE) 00:00:50 Diet, Weight Loss, Calories & Hormones 00:05:52 Body’s Response to Eating vs Fasting, Fasting Duration 00:09:04 Time-Restricted Feeding & Metabolic Benefits, Circadian Gene Rhythm 00:14:32 Optimal Meal Timing, Tool: Extend Sleep-Related Fasts 00:19:42 Eating Window Length, Tools: Adjusting TRE for Building Muscle, Regularity 00:22:34 Accelerate Transition to Fasting, Glucose Clearing, Tool: After-Meal Walk 00:24:16 Metformin, Berberine, Continuous Glucose Monitors; Cell Growth vs Repair, mTOR 00:27:25 Gut Microbiome; Transitioning to Intermittent Fasting & Individualization 00:29:43 Tool: 8-Hour Feeding Window & Weight Loss 00:31:05 What Breaks a Fast?, Sugar; Tool: Using Salt to Support Fasting 00:34:08 Tool: Ideal Feeding Window Guidelines; Exercise & Social Considerations Disclaimer & Disclosures: https://www.hubermanlab.com/disclaimer

SPEAKERS

Andrew Huberman
host

EPISODE SUMMARY

In this episode of Huberman Lab, featuring Andrew Huberman, Dr. Andrew Huberman: How Meal Timing Reshapes Metabolism explores time-Restricted Eating: When You Eat Matters More Than You Think Andrew Huberman explains how intermittent fasting, specifically time-restricted eating, affects fat loss, metabolic health, organ function, hormones, and longevity. Drawing from landmark animal and human studies, he distinguishes between the effects of what you eat and when you eat, emphasizing that timing strongly influences circadian rhythms and cellular repair. He presents practical, research-backed rules for structuring an 8-hour feeding window around sleep, and discusses tools like walking, glucose disposal agents, and salt to manage fasting. Huberman also highlights individual variability, especially in mood and hormone responses, and stresses gradual adoption and consistency of any fasting schedule.

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