The Science & Process of Healing from Grief

High-Level Overview

In this solo episode, Andrew Huberman explores grief through the lens of neuroscience and psychology. His central idea is that grief is not simply sadness but a motivational state: a yearning for someone or something that is permanently out of reach. Drawing heavily on the work of University of Arizona grief researcher Mary-Frances O'Connor and on brain imaging studies, he explains that the brain maps every relationship along three dimensions (space, time and closeness), and that healing requires keeping the closeness while remapping where and when that person can be found.

The tone is gentle, reflective and at times personal. Huberman shares his own experience after his graduate advisor died, and reads a moving letter the physicist Richard Feynman wrote to his late wife. The episode moves from myths about grief to the brain science of attachment, then to individual differences in how people grieve, and finally to practical tools, from dedicated grieving time and breathing to morning sunlight and sleep.

The Discussion Explores:

• Why the Kübler-Ross five stages are real but not universal or linear, and how grief differs from depression
• Grief as a craving state that activates reward and pain circuits in the brain
• The three dimensions of attachment: space, time and closeness, and the brain region that ties them together
• Richard Feynman's letter to his late wife as a window into the grieving mind
• Place cells and "trace cells" that fire when an expected person is absent
• Oxytocin, prairie voles, and why people grieve at different rates
• Adrenaline, vagal tone and cortisol rhythms as predictors of complicated grief
• Practical tools: dedicated grieving time, avoiding counterfactual thinking, breathing, sunlight, sleep and NSDR

Deep Dive into Main Ideas

Myths About Grief and How It Differs from Depression

Huberman begins by honoring Elisabeth Kübler-Ross, whose book on death and dying described five stages of grief: denial, anger, bargaining, depression and acceptance. Modern psychology and neuroscience show that while many people experience some or all of these, not everyone does, and people rarely move through them in order. Grief also varies with the type of loss, whether it follows old age, illness, suicide, a breakup or even homesickness.

He distinguishes complicated grief, which affects about one in ten people and fails to resolve even after a long time, from non-complicated grief. He also stresses that grief and depression, though they share symptoms like poor appetite, trouble sleeping and sudden crying, are distinct processes. Grief rarely responds well to antidepressants, while depression often does. "Grieving is not depression and depression is not necessarily grieving."

Grief as Craving: The Glass of Water Just Out of Reach

Huberman asks listeners to picture being desperately thirsty with a full glass of water in front of them that always shifts just out of reach. That, he says, is close to the experience of grief. A key paper by O'Connor, Craving Love? Enduring Grief Activates Brain's Reward Center, found that grieving people show activity in pain-related brain areas, as expected, but those with complicated grief also show reward-related activity in the nucleus accumbens, a region where dopamine drives motivation.

This leads to one of his key points: "dopamine is not about feeling good." Dopamine is about wanting and seeking, whether in addiction, hunger or love. "Grief is not just about sadness." It is both pain and a state of anticipation and readiness for action, what Huberman calls being "center of mass forward," reaching toward something even when we know it cannot be resolved.

Space, Time and Closeness: How the Brain Maps Relationships

Huberman describes an imaging experiment in which people viewed objects like bowling balls at different distances, listened to sounds spaced at different intervals, and looked at photos of people, both near and far and emotionally close or distant, such as a sibling versus a stranger or celebrity. In all three conditions, the same brain region, the inferior parietal lobule, tracked the changes. The takeaway is that our map of people weaves together emotional closeness with where they are in space and when we last saw them or will see them again.

He invites listeners to fill in the blanks: how long would it take to reach someone you love, and how soon would you expect to hear from them after they landed on a flight? The brain constantly predicts these things based on a rich store of episodic memory. When someone dies, the attachment remains, but the space and time predictions are shattered. Grief, in Huberman's framing, is the process of uncoupling the attachment from the old map of where and when that person could be found. The brain keeps firing predictions that they will walk through the door, which explains the yearning and the denial many people feel.

Richard Feynman's Letter to Arlene

To illustrate, Huberman reads a letter the Nobel Prize-winning physicist Richard Feynman wrote on October 17, 1946, to his first wife and childhood sweetheart, Arlene, who died young of tuberculosis. The letter was found among his belongings after his death. He tells her he adores her and still wants to do projects with her, writing, "You dead are so much better than anyone else alive," and that other women "all seem ashes." He ends with "I love my wife. My wife is dead," followed by "P.S. Please excuse my not mailing this but I don't know your new address."

Huberman sees all three dimensions in that letter: an attachment that is fully intact, a clear logical understanding that Arlene is gone, and a painful uncertainty about where she now is. He recommends Feynman's books Surely You're Joking, Mr. Feynman! and What Do You Care What Other People Think?, noting that the latter title was actually a quote from Arlene.

Place Cells, Trace Cells and the Phantom Limb of Grief

Huberman shares that for years after his graduate advisor died of breast cancer, her daughter used her old phone, and his first reflex when it rang was excitement that she was calling. He also felt a touch on the back of his neck when he thought of her. He compares this to phantom limb sensations, which neurologist V.S. Ramachandran eased using a mirror box. "Grief in many ways is like a phantom limb."

The hippocampus contains place cells that fire at familiar locations and cells that fire as we approach expected objects. The Moser lab and others described cells that fire when something expected to be in a place is missing, which Huberman calls trace cells. These neurons likely become very active right after a loss, so expecting a loved one to call or appear is simply the normal workings of these circuits. "You are not crazy." He adds that however you understand where the person now is, whether through religious belief or the idea of molecules returning to nature, it helps to give them some firm place in your map rather than leaving that dimension blank.

Oxytocin, Prairie Voles and Different Rates of Grieving

Why do two people who loved the same person grieve so differently? Huberman points to oxytocin, a peptide hormone involved in bonding between partners and between parents and children. Research on prairie voles, including work from former National Institute of Mental Health director Tom Insel, shows that monogamous voles separated from their partners will work very hard, even crossing a mildly shocking plate, to reach them, while non-monogamous voles work less hard. Monogamous voles have far more oxytocin receptors in the nucleus accumbens, linking attachment to motivation.

Human studies suggest that people with intense yearning after a loss may also have more oxytocin receptors in craving-related brain areas. Huberman stresses this doesn't mean they are more capable of love than people who move on faster, and he urges compassion both for those who seem to move on quickly and for those who struggle for a long time. He dismisses folk rules like needing one month to get over someone for every year together as lacking evidence, and points listeners to free questionnaires on O'Connor's website that help separate complicated from non-complicated grief.

Adrenaline, Vagal Tone and Emotional Writing

Another O'Connor paper found that people with the highest baseline levels of epinephrine (adrenaline) before treatment had the most complicated grief symptoms afterward, a link not seen with depression. Huberman suggests that lowering baseline stress with tools from his episode on mastering stress may help prepare anyone for the losses everyone eventually faces.

He then describes a study in Biological Psychology of 35 bereaved people. One group wrote about their deepest thoughts and emotions about their loss, including a letter to the person who died, three times a week; a control group wrote about how they spent their time. Overall there was no difference, but people with higher vagal tone, meaning a stronger ability to slow the heart through the vagus nerve, benefited more from the emotional writing. Huberman explains respiratory sinus arrhythmia: inhales speed the heart up and exhales slow it down, and you can strengthen this by consciously slowing your heart on the exhale for one to five minutes a day. He suggests this may help people who struggle to feel their attachment, while those already overwhelmed by intense grief may not need more of it.

Cortisol, Sunlight and Sleep

In healthy people, cortisol peaks about 45 minutes after waking and falls to low levels by around 4 p.m. and 9 p.m. A study of cortisol across the day found that people with complicated grief had significantly higher cortisol at 4 p.m. and 9 p.m. than those with non-complicated grief. The relationship likely runs both ways, but Huberman argues it makes sense to protect this rhythm.

His recommended tool is viewing sunlight soon after waking for about 10 to 30 minutes, without sunglasses and not through a window (which he says is about 50 times less effective), even on cloudy days, and dimming bright artificial light in the evening. He emphasizes that these are modulators, not cures, but that good sleep is when neuroplasticity, the rewiring that grieving requires, actually happens, along with non-sleep deep rest (NSDR) sessions of 10 to 30 minutes.

The Core Tool: Rational Grieving

Huberman's main recommendation is to set aside dedicated time, anywhere from 5 to 45 minutes depending on capacity, to deliberately feel the full depth of your attachment to the person, animal or thing you lost, while staying anchored in the present moment and your current surroundings. He calls this "rational grieving": accepting the new reality while holding on to the attachment itself.

During this time, avoid counterfactual thinking, the endless "what ifs" about calling a day earlier or taking a different route. Huberman explains that guilt often assigns us more control over reality than we actually had, and that dwelling on what ifs strengthens the old memory map rather than loosening it. Also avoid distraction through substances or denial. He acknowledges this is a knife edge and hard work, and stresses that therapists, psychiatrists and bereavement groups are valuable, especially for complicated grief. He also includes losses of meaningful objects, like a wedding ring or a shared seashell, as real sources of grief.

Conclusion

Huberman reframes grief as a normal, deeply biological process of longing: the brain's map of a loved one keeps predicting where and when they will appear, even after we know they are gone. Healing does not mean loving them less; it means keeping the attachment while gently remapping space and time, through dedicated periods of rational grieving, steering clear of what-if thinking, and supporting the brain's capacity to change with good sleep, morning sunlight, calmer baseline stress and stronger vagal tone. He closes by encouraging listeners to lean into their current relationships and build rich memories with the people and animals they love, since the depth of those attachments is what makes life worth living, even though it is also what makes loss so painful.

This is a summary of "The Science & Process of Healing from Grief" from Huberman Lab, giving you the GIST so you can decide if you want the REST. Listen to the full episode.