How the Brain Learns to Live with Loss
Agnes Wong
My husband used to arrive home at around 7 p.m. After his death, a sound around that time could still make me think, for a moment, that he was arriving. Then I would remember that he would never come home again, and a fresh wave of grief would follow.
I knew he had died. Yet something in me continued to expect him. How could both be true?
Perhaps you have experienced something similar: reaching for the telephone to share some news, looking towards a familiar chair, or beginning a sentence before remembering there is no one there to answer. If so, you are not alone. These moments can leave us bewildered—by our own response to the loss as much as by the loss itself. Why does something we already know keep taking us by surprise?
After my husband died, such questions became deeply personal. Why was the loss so overwhelming, even though I had known it was coming? Why did his absence unsettle my sense of who I was? And how could I learn to live without him while continuing to love him?
Reading Mary-Frances O’Connor’s The Grieving Brain was healing for me, and it helped me begin to make sense of these questions. The science of grief it describes showed me that loving someone becomes part of how our brain understands the world. When they die, we have to learn how to live in a world that no longer matches what years of shared life have taught us to expect.
Many of us are familiar with the five stages of grief: denial, anger, bargaining, depression, and acceptance. Originally developed from observations of people facing their own death, these categories can name some experiences of bereavement. But they cannot tell us how grieving should unfold. We may experience some of them, move back and forth, or feel emotions they do not describe.
Understanding more about attachment, memory, and learning offers another way to approach grief—and perhaps a little more kindness towards ourselves as we find our way.
Why does loss hurt so much, even when we think we are prepared?
To understand why loss affects us so deeply, we need to begin with attachment. From infancy, we depend on others for safety and comfort. These needs continue throughout life.
A loved one becomes someone whose presence makes a difficult day more bearable, someone we look for when we are frightened. We come to rely on their voice, their touch, and the knowledge that they are there. This familiarity develops through countless encounters, many so ordinary that we scarcely notice them.
Studies of prairie voles, small rodents that often form lasting partnerships, offer clues to how attachment takes root. Chemical messengers such as oxytocin and vasopressin interact with the brain’s reward and motivation systems, helping connect a particular partner with the desire for closeness. Bonding has also been linked to changes in gene activity that can make the brain more responsive to these chemical messengers, helping an attachment take hold.
Human relationships are far more complex, but these findings offer a useful insight: shared experience can shape the brain. This capacity for change is called neuroplasticity. A life lived with someone builds patterns of connection and expectation that do not simply disappear when that person dies.
Knowing in advance that a death is approaching cannot undo those patterns. We may prepare carefully, make arrangements, and say what matters. Yet we cannot rehearse every ordinary moment in which that person will be missing.
Bereavement also affects the body’s stress systems. Research in bereaved people has found changes that can include higher cortisol levels and increases in heart rate and blood pressure. Grief can disturb our sleep and appetite, leaving us exhausted or unsettled. We face both the stress of loss and the absence of a familiar source of safety—the very person we might ordinarily turn to for comfort.
We can be gentler with ourselves when the loss feels overwhelming, even after a long illness.
Why does losing someone feel like losing part of myself?
A shared life changes more than our routines. It also shapes who we are.
One way to understand a close relationship is through self-expansion: we begin to include aspects of another person in our sense of self. Their perspectives, interests, abilities, and resources become part of our shared world. What one person knows or can do expands what feels possible for both.
We remain individuals, but over time “I” comes to include something of “we.”
When that person dies, we may experience a painful contraction. We lose their companionship, and we also lose the familiar way of being ourselves in relation to them. Questions arise that reach beyond missing their presence: Who am I now? What gives my life direction? What has become of the future we imagined together?
After my husband’s death, I felt this unsettling of identity. His absence changed the life around me and my sense of myself within it.
The love remains, but the shared life through which we expressed it has changed profoundly. Some of the pain of grief comes from this: we still love, still reach towards them, and can no longer meet them in the ways we once did.
Why does the familiar world suddenly feel so strange?
The people we love become woven into our understanding of everyday life. We know where we are likely to find them, when we expect to see them, and how close they feel to us. Space, time, and psychological closeness together give a relationship its familiar place in our world.
The brain helps us navigate our surroundings by remembering places and what belongs in them. In an experiment with rats, researchers found nerve cells that responded at locations where an object had previously stood, even after it had been removed. They called these “object-trace cells.”
Though found in rats, this finding offers a helpful way to think about grief: our inner picture of the world does not change immediately when the world itself changes. A loved one belongs in many places within that picture: at the kitchen table, beside us on a walk, on the other side of the bed. Returning to those places can make their absence feel newly startling.
These expectations are woven into the rhythms of our days as well. Morning may mean breakfast together; a certain evening hour may mean sitting together to read or watch television. Through repetition, places, times, and shared activities become linked. A familiar moment, such as the hour my husband used to come home, can call up the expectation of someone’s presence before we have consciously thought about it.
There is also our felt sense of closeness. We speak of “close friends” and “distant relatives,” and research suggests that the brain’s representations of social closeness overlap with its representations of distance in space and time.
Applied to grief, this may help explain something many bereaved people recognize: someone can feel profoundly close to us while being physically unreachable. At one moment, their presence feels almost tangible; at another, their absence seems impossible to comprehend.
So much of the world still points towards them. Yet we can no longer find them where our experience has taught us they belong.
Why do I still expect them to return when I know they cannot?
Memory helps explain this. It works in different ways: we can consciously recall facts and events, while other learning is expressed through habits and automatic responses. Our knowledge of a loved one draws on both.
We may remember the funeral and know perfectly well that the person has died. At the same time, years of experience have taught us to expect them. A single devastating event must somehow be reconciled with thousands of encounters in which they were there.
Seeing grief as a form of learning helps explain why knowing the facts and absorbing their implications can happen at different speeds. We can understand the death while still reaching for the person.
We often say that time heals, but what matters is what happens within that time. Eating alone, returning home, making decisions, and passing through familiar occasions give us repeated experiences of a changed world. Gradually, our expectations can adjust.
That learning can hurt. Some days we may feel able to take in what has changed; on others, even a small reminder may be too much. Support from other people can make these encounters easier to bear. We are learning something difficult, and we do not have to manage every part of it alone.
Why does grief unfold so differently for different people?
Research following bereaved partners over several years has found different patterns. Some people experience intense grief that gradually eases. Some have less distress from the beginning. Others struggle more persistently. There is no single course against which everyone’s experience can be measured.
Someone who returns to work quickly may still miss their partner deeply. Someone who cries less may express grief in other ways. The intensity of visible distress tells us little about how much a person loved.
Yearning, too, can be understood through attachment. One small brain-imaging study found that, among women with particularly persistent grief, reminders of the deceased activated a region involved in reward and motivation. Greater activity was associated with stronger longing, suggesting that systems which once drew us towards a loved person may continue responding to them after their death.
Grief is complex, and each person finds their own way through it.
Why can even ordinary tasks feel so overwhelming?
Grief involves both the pain of losing someone and the work of adapting to the life their absence leaves behind.
Bills still need paying, meals need preparing, and decisions need making. We may have to learn unfamiliar tasks, take on responsibilities once shared, or enter situations we had always faced together. Something as ordinary as completing a form can confront us with a changed identity: spouse becomes widow or widower.
These mundane demands caught me by surprise. They could seem small beside the enormity of the death, yet they asked something of me when I already felt depleted.
We move back and forth between attending to the loss and dealing with these changes. We may spend an afternoon remembering and crying, then turn to a household task or meet a friend for dinner. Along the way, conflicting emotions can arise. Learning to manage something on our own may bring satisfaction and sadness together. An enjoyable evening may be followed by a renewed ache.
We also need periods of rest. A walk, a film, or laughter with a friend can provide relief. We can allow room for sorrow, practical adjustment, and ordinary pleasures as our circumstances and capacity change.
What can help when my mind keeps circling the same questions?
Why did this happen? Could I have prevented it? Did I do enough?
When we have cared deeply for someone, questions about what we did or failed to do can be especially painful. We may keep searching for an answer that would make the death easier to understand.
Reflection can help us come to terms with what happened. But repeatedly going over the same unanswerable questions can leave us exhausted.
Mindfulness offers one way to change our relationship with these thoughts. We practise noticing a thought and the feelings it carries, then gently returning attention to what is happening now. We might feel our feet on the ground, notice our breathing, or attend to the task in front of us. The thought may return; we can begin again.
Mindfulness approaches may help some bereaved people manage distress, although the evidence is still developing. For grief that remains prolonged and disabling, therapies focused specifically on grief have stronger support.
Yet in the acute period after my husband’s death, I could not sit still to meditate. Walking helped. Movement gave me a way to be with my experience when sitting quietly felt beyond my capacity.
What helps can change from day to day. Sometimes we need to talk about the person who died. Sometimes we need companionship without much conversation, help with a practical task, or a break from thinking about the loss. Having more than one way to respond gives us room to meet ourselves where we are.
Can I live fully again and still love the person who died?
Adapting can leave the relationship intact. Love can continue through memory, through values the person helped shape, and through ways of living that carry their influence. We can acknowledge their death while finding a different form for the bond.
New relationships, interests, and roles can become meaningful alongside that continuing love. They need room to develop in their own right, without the burden of replacing the person who died or recreating the life we had together.
Our affection for living family and friends can deepen. We may discover unfamiliar parts of ourselves. When we are ready, new possibilities can begin to matter.
For me, the science offers a way to understand why the mind may keep expecting someone long after we know they have died. It also suggests that the patterns shaped by a shared life can gradually accommodate a changed one.
Now, when seven o’clock comes, the evening still holds his absence. In time, it can hold other things too. His place in my life remains precious, and alongside it there is room for the people and possibilities still here. If you are learning to live with a loss of your own, remember that the brain keeps learning, and that you are not alone.
