Dispelling myths that excess protein intake increases cancer risk | The Peter Attia Drive Podcast

Peter Attia MD

Peter Attia MD

10 min, 46 sec

The conversation revolves around the effect of mTOR and IGF-1 related to health and fitness. The guests also discuss the impact of resistance training on these factors and the importance of overall diet quality.

Summary

  • The discussion begins with the host questioning the guest's perspective on mTOR and IGF-1, which are often perceived as harmful.
  • The guest explains that many scientists do not understand the difference between a short-term acute response to a stressor versus dysregulated signaling that persists indefinitely.
  • He highlights that mTOR elevations leading to cancer mostly originate at insulin resistance, signalling a chronic kind of low-level pushing of the button.
  • The guest refers to findings from meta-analyses on cancer incidents amongst resistance trainers, showing lower levels of cancer in people who resistance train.
  • The conversation leads to a discussion on overall diet quality, emphasizing that good diet quality can be achieved on a whole host of different diets.
  • The guest clarifies that high protein diets do not necessarily lead to cancer, as seen in a study of 100,000 people.
  • The podcast ends with the host reminding the listeners that the content is for general informational purposes only and not intended to be a substitute for professional medical advice.

Chapter 1

Introduction and Misconceptions about mTOR and IGF-1

0:00 - 1 min, 40 sec

Conversation begins with the host questioning the guest's perspective on mTOR and IGF-1, which are often perceived as harmful.

Conversation begins with the host questioning the guest's perspective on mTOR and IGF-1, which are often perceived as harmful.

  • The host starts by questioning the guest's perspective on mTOR and IGF-1.
  • The guest notes that many scientists do not understand the difference between a short-term response to a stressor versus dysregulated signaling that persists indefinitely.
  • The guest explains that mTOR elevations leading to cancer mostly originate at insulin resistance.

Chapter 2

Resistance Training and Cancer

1:40 - 1 min, 49 sec

Discussion on the relationship between resistance training, mTOR and IGF-1, and cancer incidence.

Discussion on the relationship between resistance training, mTOR and IGF-1, and cancer incidence.

  • The guest refers to findings from meta-analyses on cancer incidents amongst resistance trainers, showing lower levels of cancer in people who resistance train.
  • He suggests that there is a difference between these two signals, and that resistance training does not increase mTOR to a detrimental extent.
  • The guest asserts that tissue specificity also plays a crucial role in this context.

Chapter 3

Role of Diet Quality

3:29 - 5 min, 54 sec

Discussion on the impact of overall diet quality, highlighting that good diet quality can be achieved on a variety of diets.

Discussion on the impact of overall diet quality, highlighting that good diet quality can be achieved on a variety of diets.

  • The guest emphasizes the importance of overall diet quality and suggests that good diet quality can be achieved on a variety of diets, including ketogenic and plant-based diets.
  • He notes that high levels of mTOR activation and IGF-1 are typically found in people with poor dietary habits.
  • The guest clarifies that high protein diets do not necessarily lead to cancer, as seen in a study of 100,000 people.

Chapter 4

Closing Remarks and Disclaimer

9:22 - 1 min, 20 sec

The host concludes the podcast with some closing remarks and a disclaimer about the content of the podcast.

The host concludes the podcast with some closing remarks and a disclaimer about the content of the podcast.

  • The host ends the podcast reminding the listeners that the content is for general informational purposes only and not intended to be a substitute for professional medical advice.
  • He also mentions that he maintains an active and up-to-date list of the companies he invests in or advises on his website.

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