How Many Stages of Grieving Are There? What Science Says

The most widely known model of grief has five stages: denial, anger, bargaining, depression, and acceptance. Psychiatrist Elisabeth Kübler-Ross introduced them in 1969, and they became so deeply embedded in popular culture that most people assume they’re settled science. They’re not. The five stages were never based on systematic research, and several alternative models offer a more accurate picture of how grief actually works.

The Five Stages, Explained

Kübler-Ross originally described these stages based on conversations with dying patients, not with people mourning a death. Over time, the framework was applied broadly to anyone experiencing loss. The stages are:

  • Denial: A numbing disbelief that can make it hard to carry on with normal routines, self-care, or daily responsibilities.
  • Anger: Frustration that may be directed at specific people or situations, or may surface randomly. You might snap at a stranger in a grocery store for no clear reason. It’s not always rational.
  • Bargaining: Replaying “what if” and “if only” scenarios, searching for ways the loss could have been prevented.
  • Depression: A deep sadness that can include loss of hope, difficulty concentrating, trouble making decisions, and feeling directionless about the future.
  • Acceptance: Not happiness, but a sense of finality. You can hear a song that reminds you of your loved one without falling apart. You hold onto sadness while also experiencing good memories and maintaining hope.

Before her death in 2004, Kübler-Ross herself clarified that the five stages are “not stops on some linear timeline in grief. Not everyone goes through all of them or goes in a prescribed order.” That disclaimer often gets lost when the model is taught or referenced casually.

Why the Five Stages Don’t Hold Up Well

Multiple studies have tested whether people actually move through grief in distinct, predictable phases. The results are not encouraging for the model. A 1981 study of 193 widowed individuals found that the stresses of losing a spouse persisted for years, with no evidence of separate stages of adaptation. Research by George Bonanno in 2002 tracked 205 people before and after their spouses died and found that only 11% followed the grief trajectory the stages model assumes to be “normal.”

A 2007 study of 233 bereaved people initially seemed to support the stages, but drew immediate criticism from other researchers. The study’s own authors later suggested the stages needed to be relabeled and reconceptualized, effectively undermining their own findings. The core problem is that the original model was built from case studies and clinical impressions, not from controlled observation of how grief unfolds over time.

Alternative Models of Grief

Because the five stages leave so many people’s experiences unexplained, psychologists have developed other frameworks that tend to match reality more closely.

Worden’s Four Tasks of Mourning

Psychologist William Worden reframed grief not as something that happens to you in stages, but as active work you do over time. His model describes four tasks:

  • Accept the reality of the loss. You may know intellectually that someone has died but still feel a deep sense of disbelief. This task involves absorbing that reality with your whole being, not just your logical mind.
  • Process the pain. Grief shows up emotionally, physically, cognitively, and spiritually. Despite well-meaning advice to “be strong” or “move on,” this task involves actually feeling and expressing those reactions rather than suppressing them.
  • Adjust to a changed world. This means practical adjustments like taking on responsibilities the person used to handle, internal adjustments like building a new sense of identity, and spiritual adjustments like grappling with questions about meaning and belief.
  • Find an enduring connection while moving forward. Rather than “letting go,” this task involves creating a balance between remembering the person who died and building a full life going forward.

The tasks model is useful because it treats grief as something you actively navigate rather than passively experience. You can work on multiple tasks at once, return to earlier ones, and move at your own pace.

The Dual Process Model

Developed by bereavement researchers Margaret Stroebe and Henk Schut, this model describes grief as an oscillation between two types of stress. Loss-oriented coping is what most people picture when they think of grieving: yearning for the person, looking at old photos, crying, replaying memories. Restoration-oriented coping is everything else that loss forces you to deal with: managing finances your partner used to handle, reorganizing daily life, adjusting to a new identity as a widow or a bereaved parent, coping with social loneliness.

The key insight is that healthy grieving involves moving back and forth between these two modes. Some days you’re immersed in your loss. Other days you’re distracted by practical demands or simply need a break from the intensity. That oscillation is not avoidance or denial. It’s a necessary regulatory process, and research suggests it supports better adjustment over time.

How Grief Affects Your Body

Grief is not purely emotional. It disrupts sleep patterns, alters stress hormone levels, and can weaken your immune system. Physical symptoms like weakness, trouble breathing, and restlessness are common, especially in the early weeks and months. These aren’t signs that something is wrong with you. They’re a normal physiological response to an extraordinary stressor. The physical toll is one reason grief can feel so exhausting even on days when you think you’re “handling it.”

When Grief Becomes a Clinical Concern

Most grief, even when it’s intense and long-lasting, is not a disorder. But in 2022, prolonged grief disorder was added to the major diagnostic manuals used worldwide. The criteria require that grief symptoms persist for at least one year after the loss in adults (six months in children) and that at least three specific symptoms occur nearly every day for the most recent month. Those symptoms include feeling as though part of yourself has died, emotional numbness, a sense that life is meaningless without the deceased, and intense loneliness or detachment from others.

The distinction between normal grief and prolonged grief disorder isn’t about how sad you are. It’s about whether grief is causing significant impairment in your ability to function at work, in relationships, or in daily life, well beyond what’s expected in your cultural context. This diagnosis exists so that the small percentage of people who get stuck in acute grief can access targeted support, not to pathologize the painful but normal process most people go through.

What Actually Helps

There is no single right way to grieve, but certain strategies consistently help people cope. Social support from friends, family, or community members remains one of the most important factors. Grief support groups, whether in person or online, provide connection with others who understand what you’re going through in a way that people who haven’t experienced loss often can’t.

Physical movement and exercise help regulate the stress hormones that grief elevates. Artistic expression, whether writing, painting, music, or anything creative, gives shape to emotions that are hard to articulate. Cultural, religious, or spiritual rituals provide structure during a time that feels chaotic. For people experiencing prolonged grief disorder or finding it especially difficult to function, individual or group psychotherapy offers more structured clinical support.

The most important thing to understand about grief models is that none of them are prescriptive. Whether you think in terms of five stages, four tasks, or two oscillating processes, your grief will follow its own path. These frameworks are lenses, not checklists. They’re useful when they help you make sense of what you’re feeling, and worth setting aside when they don’t.