Skip to content

By playing, you agree to uListen's Terms and Privacy Policy and YouTube's Terms of Service.

Lewis HowesLewis Howes

FAST THE RIGHT WAY: What To Eat & When To Eat For LONGEVITY | Dave Asprey

- Sign up for my FREE newsletter & get a dose of inspiration from our world-class guests, learn how to improve your life!

Dave AspreyguestLewis Howeshost
Mar 22, 20211h 7mWatch on YouTube

Summaries, chapters, transcripts, and FAQs on this page are made by uListen, not YouTube.

Great conversations run long. Their best ideas don't have to.

uListen is free on iPhone, iPad, Android, Chrome, and Claude.

See how

At a glance

WHAT IT’S REALLY ABOUT

Dave Asprey Explains Flexible Fasting, Food Choices, and Biohacks for Longevity

  1. Asprey argues there is no single fasting protocol, and that people should adjust the length and style of a fast to how they feel, their sleep, stress, sex and stage of life, avoiding the 'fasting trap' of assuming more is better.
  2. He says over-fasting or over-doing keto shows up as worse sleep, then hormonal or cycle disruption, then hair thinning, and recommends mixing fasting days with eating days and some carbs.
  3. He describes cravings as driven by food composition, naming calories, nutrients and anti-nutrients, and criticizes seed oils, industrially raised meat, and plant-heavy vegan diets while favoring grass-fed meat, good fats and cooked vegetables.
  4. He recommends three fasting aids, namely black coffee, MCT oil with a little grass-fed butter, and prebiotic fiber, which he says suppress hunger without raising insulin or mTOR.
  5. He closes with his top five biohacks, which are forgiveness, sleep, movement, cold exposure and neurofeedback or meditation, and he promotes a free two-week fasting training at fastthisway.com.

IDEAS WORTH REMEMBERING

5 ideas

Fasting should change day to day

Asprey says the right fast depends on readiness, sleep and stress, and that people should give themselves permission to shorten or lengthen a fast, much as an athlete adjusts a workout.

More fasting is not better

He describes an inverted-U response in which too much fasting or keto sends a famine signal, which he says shows up as worse sleep, then hormonal disruption, then hair thinning.

Cravings come from what you eat

He distinguishes intense cravings from gentle hunger and says gnawing hunger during a fast is the result of what you ate before, with foods like fries, kale and bell peppers cited as culprits for some people.

Fasting supports anti-aging through insulin and autophagy

Asprey says regular fasts of 14 to 16 hours reduce insulin resistance, trigger autophagy and increase stem cells, testosterone and growth hormone.

Cycle diets rather than staying in one

He argues all-vegan or all-keto forever is poor, and describes using fasting, exercise and then protein to spike mTOR briefly, while the chronic extremes of high or suppressed mTOR cause problems.

WORDS WORTH SAVING

5 quotes

Fasting is like exercise, and you don't wanna overdo it and you don't wanna underdo it.

— Dave Asprey

A craving is when, "If I don't eat soon, a disaster is gonna happen," like, "I really need to eat." But it turns out hunger is, "I should probably eat some time in the next couple hours for, you know, to perform better, but if I didn't, I'd be all right."

— Dave Asprey

Resilience comes from biology. The people who are best at taking fat or sugar plus air, combining them and getting abundant energy, those are the people who live the longest, have the best life.

— Dave Asprey

So in- instead of willpower, it's just biology. It's so much easier that way.

— Dave Asprey

If you can learn the skill, and it is a skill you practice, it's a muscle, to forgive the grudges that you carry, it will make you live longer, it will make you happier.

— Dave Asprey

Read the available transcript
Flexible, personalized intermittent fastingThe fasting trap and over-fasting symptomsCravings versus hungerAnti-nutrients, seed oils and industrial meatVegan versus carnivore and mTOR cyclingFasting hacks: coffee, MCT and prebiotic fiberStem cells and anti-aging

Ask ChatGPT about this episode

Get its key ideas, plus a summary of each chapter linked to that point in the video, right in your chat.

  1. Add uListen AI to ChatGPT.

  2. Paste this prompt into a new chat.

    Use uListen AI to give me this episode's key ideas and a chapter-by-chapter summary, with timestamps: https://www.youtube.com/watch?v=C2T7tTiKnNE

SPEAKERS

  • Dave Asprey

    guest

    Entrepreneur and biohacking author, founder of Bulletproof and author of “Fast This Way.”

  • Lewis Howes

    host

    Podcast host and author; creator/host on the Lewis Howes channel (The School of Greatness).

High quality AI-generated summary created from speaker-labeled transcript.

Get more out of YouTube videos.

Read along on your phone, search it beside the video, or ask your favorite AI app what was said.