Mental Health Toolkit: Tools to Bolster Your Mood & Mental Health

The episode is framed as a toolkit for mood and mental health. The host, who introduces himself as Andrew Huberman, a professor of neurobiology and ophthalmology at Stanford School of Medicine, draws on three sources: a guest episode with psychologist and neuroscientist Dr. Lisa Feldman Barrett, whose lab studies mood and emotions; a four-episode series on mental health with psychiatrist Dr. Paul Conti; and recent peer-reviewed publications, some released as recently as two weeks before recording. The Conti series is described as covering the self, the conscious and unconscious mind, relationships, and first principles of self-care, including tools that can be used alone at zero cost.

The stated reason for the topic is what the host calls a worldwide mental health crisis. The host declines to debate its causes but says mood disorders and mental health challenges are widespread. Talk therapy, prescription drugs, nutritional approaches and somatic approaches are all described as having value. Which ones a person uses depends on access, including whether they can afford treatment consistently, and on how severe the disorder is.

Before the tools, the host gives a caution. Anyone concerned that they or someone else has a serious mood or mental health disorder should seek help from a licensed clinical psychologist, psychiatrist or other qualified healthcare professional. Only after this caveat does the episode present protocols described as applying to everybody, regardless of age. The host also says the podcast is separate from their Stanford teaching and research roles, and thanks the episode's sponsors.

The organizing idea comes from what Dr. Paul Conti called the first principles of self-care or mental health. These include, but are not limited to, taking excellent care of one's biology, mind and body alike. The host distills this into the "Big Six," also called the six pillars of mental and physical health and performance.

The case for starting with biology rests on the autonomic nervous system. The host describes it as running unconsciously in the background, regulating sleep-wake cycles, how we react to things, and how much dopamine, serotonin, epinephrine and acetylcholine we produce. Hormones such as testosterone, estrogen, cortisol and prolactin are also part of that background. In this framing, deliberate psychological work, such as understanding one's life narrative or the defenses the unconscious mind produces, sits on top of that biological foundation.

The six pillars as listed: sleep; light (renamed from "sunlight" to "light/dark" because of new data); movement; nutrition; social connection; stress control.

The host limits what the pillars can do. They should be practiced every 24 hours, but they are not enough on their own to optimize or keep improving mood. More targeted approaches, promised for later in the episode, are still needed. Each pillar is covered only briefly because earlier episodes went into detail, and listeners are pointed to the hubermanlab.com search function for timestamps and resources.

Again, this is a necessary list, but is not sufficient.

On duration, the host says most people need six to eight hours per night. Some manage on five and some need 9 or 10. Growing kids, babies, teenagers and people who are ill may need 9, 10 or even 12 hours. No single figure is prescribed. The host says each person has to experiment to find what works best for them.

The host credits the next idea to someone else: sleep is like physical fitness, something to work on continually rather than fix once. A good night does not justify dropping the protocols the next night. The host also argues against being neurotic about it. Life brings disruptions such as raising kids, emergencies and all-nighters before exams, and the analogy is meant to keep a single bad night from causing stress. Some things that help or harm sleep happen during the day, such as caffeine taken too late and morning sunlight.

It's a daily, or rather I should say, nightly investment.

The host calls a consistent sleep schedule an underdiscussed point. They concede that identical bed and wake times every day are not practical and say they don't keep them. Still, the circadian health literature is cited as supporting falling asleep and waking at roughly the same times. The working tolerance is plus or minus one hour. With a usual bedtime of 10:00 and sleep onset around 10:30, falling asleep at 9:30 or at 11:30 both stay inside the window. The same plus-or-minus-one-hour rule applies to waking.

The claimed cost of going outside that window is grogginess on waking even after enough sleep. The host also describes problems with mood and energy regulation in the morning and afternoon, even when people get their usual eight hours. Consistency is said to support the right amounts of slow-wave (deep) sleep and rapid eye movement sleep, and to make energy, mood and focus more predictable through the day.

The second pillar starts with viewing sunlight with the eyes as early as possible after waking. The host says this benefits mood, focus, alertness and that night's sleep through well-defined biological and endocrine pathways covered in earlier episodes. The suggested duration is about 10 minutes on non-overcast days and 20 or 30 minutes on overcast days. Light in the late afternoon and evening is also called critical for regulating the circadian clock, with a detailed explanation deferred to a future episode.

The host answers two common objections. People who wake before sunrise should turn on artificial lights until the sun comes up and then go outside. People who say there is no sun where they live are told that even on the darkest winter mornings, far more light comes through cloud cover than is present at night.

Look, if you live on planet Earth, there's always sunlight.

For people who cannot get enough sunlight, the episode offers artificial options in a clear order of preference. One is a seasonal affective disorder (SAD) lamp of about 10,000 lux, described as somewhat expensive. The other is a cheaper 900 lux drawing tablet placed on a desk or wherever one has morning coffee. The host says they have no financial relationship with any such product and ranks SAD lamps as the next best thing, still worse than sunlight.

But frankly, nothing is as good as sunlight.

Practical specifics given in the episode: eyeglasses and contact lenses are fine because they focus light onto the retina; the practice does not work through a window or windshield, which the host says filter out the relevant wavelengths; do not stare at the sun or force yourself to look at painfully bright light; if looking directly is uncomfortable, offset the gaze by 10 to 20 degrees; facing the sun is best, but a west-facing balcony still delivers a lot of photons; bring children along, and dogs and other animals have the same circadian circuits; it is perfectly safe to look at low-angle sunlight without sunglasses, provided you're not driving into bright light.

Beyond the morning, the host cites documented mood benefits from bright light throughout the day, taken in as safely as possible. Examples are going outdoors at lunch or on walks, or making indoor lighting as bright as is safe. The proposed mechanism is melanopsin, an opsin in eye cells that responds to overall brightness rather than to the color differences of morning and evening light. These cells send axons to brain regions linked to mood and wellbeing. The host gives no daily dose for this. The stated limits are avoiding sunburn, cataracts and retinal damage. Having to blink or turn away is the signal that light is too bright.

The episode's main new claim comes from a study in Nature Mental Health. Its title is read out in the episode, and it is described as involving more than 85,000 research subjects. The researchers measured how much light and dark people received across the 24-hour cycle. They related those measurements to outcomes including bipolar disorder, schizophrenia, depression and PTSD.

Day and night light exposure are associated with psychiatric disorders, an objective light study in more than 85,000 people.

The key finding reported is that daytime light and nighttime darkness each have their own effect. The host says six to eight continuous hours of very dim to fully dark conditions in every 24-hour cycle is associated with better mental health outcomes, independent of how much light and how much sleep people get. This is why the pillar was renamed from sunlight to light/dark. The host says the daytime-light benefit has been known for decades, while the darkness finding is the more recent theme emerging from the literature.

the positive effects of daytime sunlight exposure and the positive effects of nighttime dark exposure, that means, of course, the absence of light, are independent of one another.