Journal Club with Dr. Peter Attia | Effects of Light & Dark on Mental Health & Treatments for Cancer

Andrew Huberman

Jan 22, 2024

Episode description

In this journal club episode, my guest is Dr. Peter Attia, M.D., a Stanford and Johns Hopkins-trained physician focusing on healthspan and lifespan and the host of The Drive podcast.

We each present a peer-reviewed scientific paper chosen because it contains novel, interesting, and actionable data. First, we discuss a paper on how bright light exposure at sunrise and throughout the day and dark exposure at night independently improve mental health and can offset some of the major symptoms of mental health disorders such as depression and anxiety. Then, we discuss an article that explores a novel class of immunotherapy treatments to combat cancer. We also discuss some of the new data on low-calorie sweeteners and if they are safe. This episode should be of interest to listeners curious about maximizing their vitality and longevity and to anyone seeking science-supported ways to improve mental health and lifespan.

Thank you to our sponsors
AG1: https://drinkag1.com/huberman
Eight Sleep: https://eightsleep.com/huberman
BetterHelp: https://betterhelp.com/huberman
Joovvv: https://joovv.com/huberman
LMNT: https://drinklmnt.com/huberman
Momentous: https://livemomentous.com/huberman

Dr. Peter Attia
Website: https://peterattiamd.com
The Drive Podcast: https://peterattiamd.com/podcast
Newsletter: https://peterattiamd.com/newsletter
Early Medical: https://earlymedical.com
X: https://twitter.com/PeterAttiaMD
Instagram: https://www.instagram.com/peterattiamd
Facebook: https://www.facebook.com/peterattiamd
YouTube: https://www.youtube.com/c/PeterAttiaMD

Journal Articles
Day and night light exposure are associated with psychiatric disorders: an objective light study in greater than 85,000 people (first article discussed): https://go.nature.com/47aIZcp
Early evening light mitigates sleep compromising physiological and alerting responses to subsequent late evening light: https://go.nature.com/3S84JzV
Absence of Circadian Phase Resetting in Response to Bright Light Behind the Knees: https://bit.ly/3Sr4Qb1
Time spent in outdoor light is associated with mood, sleep, and circadian rhythm-related outcomes: A cross-sectional and longitudinal study in over 400,000 UK Biobank participants: https://bit.ly/3Oe376l
Improved Survival with Ipilimumab in Patients with Metastatic Melanoma (second article discussed): https://bit.ly/492TmzX
Understanding the Warburg Effect: The Metabolic Requirements of Cell Proliferation: https://bit.ly/3OaZr5o
Screening for the Lynch Syndrome (Hereditary Nonpolyposis Colorectal Cancer): https://bit.ly/3HqgjBx
Autoimmunity Correlates With Tumor Regression in Patients With Metastatic Melanoma Treated With Anti–Cytotoxic T-Lymphocyte Antigen-4: https://bit.ly/3U6G3KA

Other Resources
Tuo: https://www.thetuolife.com
Light Meter app (Google Play): https://bit.ly/3ubAIXL
Light Meter app (App Store): https://apple.co/47GJivn
Carbon app: https://www.joincarbon.com
Fluorescence & Mammals: https://nyti.ms/493aTYU
Dr. Alia Crum: Science of Mindsets for Health & Performance: https://go.hubermanlab.com/nEZXQlCXYT
Sugar Substitutes: https://bit.ly/48IJR9e
The mechanisms of action for immune checkpoint inhibitors: https://bit.ly/3SqTi7v

Timestamps
00:00:00 Dr. Peter Attia, Journal Club
00:02:40 Sponsors: Eight Sleep, BetterHelp & Joovv
00:07:14 Light, Dark & Mental Health; Retina
00:11:16 Outdoor vs. Indoor Light, Cataracts, Sunglasses
00:16:17 Tools: Sunrise & Sunsets, Circadian Rhythm; Midday Light
00:24:55 Tools: Night & Light Exposure; Waking Before Sunrise
00:31:05 Article #1, Light/Dark Exposure & Mental Health
00:36:50 Sponsor: AG1
00:38:18 Odds Ratio, Hazard Ratio
00:45:43 Night vs. Daylight Exposure, Mental Health Disorders
00:51:35 Major Depression & Light Exposure; Error Bars & Significance
00:59:15 Sponsor: LMNT
01:00:39 Prescriptions; Environmental & Artificial Light; Red Lights
01:08:14 Nighttime Light Exposure; Sleep Trackers & Belief Effects
01:13:54 Light Directionality, Phone, Night
01:17:21 Light Wavelengths & Sensors; Sunglasses
01:20:58 Hawthorne Effect, Reverse Causality, Genetics
01:26:26 Artificial Sweeteners, Appetite
01:31:16 Natural Light Cycles, Circadian Rhythm & Mental Health
01:39:53 Article #2, Immune System & Cancer
01:43:18 T-Cell Activation; Viruses
01:50:41 Autoimmunity; Cancer & Immune System Evasion
02:00:09 Checkpoint Inhibitors, CTLA-4
02:06:45 Anti-CTLA-4 Study Drug (Ipilimumab), Melanoma
02:12:07 Patient Population, Randomization, GP100
02:18:09 Response Rate
02:22:52 Overall Survival & Response
02:28:38 Median Survival vs. Overall Survival, Drug Development
02:35:45 Gender & Dose
02:40:32 Adverse Events; Autoimmunity
02:46:42 Pancreatic Cancer; Aging & Immune System Health
02:53:57 Melanoma; Lynch Syndrome, Keytruda
02:58:43 Immunotherapy & Cancer Treatment; Melanoma Risk
03:06:26 Zero-Cost Support, Spotify & Apple Reviews, YouTube Feedback, Sponsors, Momentous, Social Media, Neural Network Newsletter

Disclaimer: https://www.hubermanlab.com/disclaimer

Episode description

In this journal club episode, my guest is Dr. Peter Attia, M.D., a Stanford and Johns Hopkins-trained physician focusing on healthspan and lifespan and the host of The Drive podcast.

We each present a peer-reviewed scientific paper chosen because it contains novel, interesting, and actionable data. First, we discuss a paper on how bright light exposure at sunrise and throughout the day and dark exposure at night independently improve mental health and can offset some of the major symptoms of mental health disorders such as depression and anxiety. Then, we discuss an article that explores a novel class of immunotherapy treatments to combat cancer. We also discuss some of the new data on low-calorie sweeteners and if they are safe. This episode should be of interest to listeners curious about maximizing their vitality and longevity and to anyone seeking science-supported ways to improve mental health and lifespan.

Thank you to our sponsors
AG1: https://drinkag1.com/huberman
Eight Sleep: https://eightsleep.com/huberman
BetterHelp: https://betterhelp.com/huberman
Joovvv: https://joovv.com/huberman
LMNT: https://drinklmnt.com/huberman
Momentous: https://livemomentous.com/huberman

Dr. Peter Attia
Website: https://peterattiamd.com
The Drive Podcast: https://peterattiamd.com/podcast
Newsletter: https://peterattiamd.com/newsletter
Early Medical: https://earlymedical.com
X: https://twitter.com/PeterAttiaMD
Instagram: https://www.instagram.com/peterattiamd
Facebook: https://www.facebook.com/peterattiamd
YouTube: https://www.youtube.com/c/PeterAttiaMD

Journal Articles
Day and night light exposure are associated with psychiatric disorders: an objective light study in greater than 85,000 people (first article discussed): https://go.nature.com/47aIZcp
Early evening light mitigates sleep compromising physiological and alerting responses to subsequent late evening light: https://go.nature.com/3S84JzV
Absence of Circadian Phase Resetting in Response to Bright Light Behind the Knees: https://bit.ly/3Sr4Qb1
Time spent in outdoor light is associated with mood, sleep, and circadian rhythm-related outcomes: A cross-sectional and longitudinal study in over 400,000 UK Biobank participants: https://bit.ly/3Oe376l
Improved Survival with Ipilimumab in Patients with Metastatic Melanoma (second article discussed): https://bit.ly/492TmzX
Understanding the Warburg Effect: The Metabolic Requirements of Cell Proliferation: https://bit.ly/3OaZr5o
Screening for the Lynch Syndrome (Hereditary Nonpolyposis Colorectal Cancer): https://bit.ly/3HqgjBx
Autoimmunity Correlates With Tumor Regression in Patients With Metastatic Melanoma Treated With Anti–Cytotoxic T-Lymphocyte Antigen-4: https://bit.ly/3U6G3KA

Other Resources
Tuo: https://www.thetuolife.com
Light Meter app (Google Play): https://bit.ly/3ubAIXL
Light Meter app (App Store): https://apple.co/47GJivn
Carbon app: https://www.joincarbon.com
Fluorescence & Mammals: https://nyti.ms/493aTYU
Dr. Alia Crum: Science of Mindsets for Health & Performance: https://go.hubermanlab.com/nEZXQlCXYT
Sugar Substitutes: https://bit.ly/48IJR9e
The mechanisms of action for immune checkpoint inhibitors: https://bit.ly/3SqTi7v

Timestamps
00:00:00 Dr. Peter Attia, Journal Club
00:02:40 Sponsors: Eight Sleep, BetterHelp & Joovv
00:07:14 Light, Dark & Mental Health; Retina
00:11:16 Outdoor vs. Indoor Light, Cataracts, Sunglasses
00:16:17 Tools: Sunrise & Sunsets, Circadian Rhythm; Midday Light
00:24:55 Tools: Night & Light Exposure; Waking Before Sunrise
00:31:05 Article #1, Light/Dark Exposure & Mental Health
00:36:50 Sponsor: AG1
00:38:18 Odds Ratio, Hazard Ratio
00:45:43 Night vs. Daylight Exposure, Mental Health Disorders
00:51:35 Major Depression & Light Exposure; Error Bars & Significance
00:59:15 Sponsor: LMNT
01:00:39 Prescriptions; Environmental & Artificial Light; Red Lights
01:08:14 Nighttime Light Exposure; Sleep Trackers & Belief Effects
01:13:54 Light Directionality, Phone, Night
01:17:21 Light Wavelengths & Sensors; Sunglasses
01:20:58 Hawthorne Effect, Reverse Causality, Genetics
01:26:26 Artificial Sweeteners, Appetite
01:31:16 Natural Light Cycles, Circadian Rhythm & Mental Health
01:39:53 Article #2, Immune System & Cancer
01:43:18 T-Cell Activation; Viruses
01:50:41 Autoimmunity; Cancer & Immune System Evasion
02:00:09 Checkpoint Inhibitors, CTLA-4
02:06:45 Anti-CTLA-4 Study Drug (Ipilimumab), Melanoma
02:12:07 Patient Population, Randomization, GP100
02:18:09 Response Rate
02:22:52 Overall Survival & Response
02:28:38 Median Survival vs. Overall Survival, Drug Development
02:35:45 Gender & Dose
02:40:32 Adverse Events; Autoimmunity
02:46:42 Pancreatic Cancer; Aging & Immune System Health
02:53:57 Melanoma; Lynch Syndrome, Keytruda
02:58:43 Immunotherapy & Cancer Treatment; Melanoma Risk
03:06:26 Zero-Cost Support, Spotify & Apple Reviews, YouTube Feedback, Sponsors, Momentous, Social Media, Neural Network Newsletter

Disclaimer: https://www.hubermanlab.com/disclaimer

Mindsip insights from this episode:

Balance T-cell longevity for effective cancer immunotherapy

The challenge in cancer immunotherapy is framed as a 'longevity problem of T-cells,' requiring cells that are wise enough to find the cancer but young enough to destroy it.

Maximize mental health with bright light and darkness balance

Getting bright light during the day and being in darkness at night have independent and additive positive effects on mental health, meaning one can help compensate for a lack of the other.

Utilize evening sun to counteract artificial light effects

Viewing the setting sun can halve the melatonin-suppressing negative effects of artificial light exposure later at night.

Utilize Tuo light to reset your circadian clock

A specific light bulb called the 'Tuo light' was developed by biologists to mimic the blue-orange light reversals of sunrise to powerfully set the circadian clock.

Utilize darkness as a non-pharmacological treatment for bipolar disorder

For people with bipolar disorder, ensuring darkness at night should be viewed as a non-pharmacological treatment because they are especially sensitive to nighttime light.

Acknowledge stagnation in metastatic cancer survival rates

Despite treatments extending how long people live with metastatic solid organ tumors, the overall survival rate has remained at virtually zero for the past 50 years.

Uncover cancer's pH cloaking mechanism to enhance immune response

Cancer cells can create an acidic local environment through their metabolism, which acts as a form of 'pH cloaking' to help them hide from the immune system.

Understand immunotherapy's dual impact on health

A powerful anecdote illustrates how an immunotherapy drug cured a friend's pancreatic cancer but also caused his immune system to destroy his pancreas, resulting in type 1 diabetes.

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