Fatigue and loss of energy following a bereavement: why it happens and what it really means

April 4, 2026 · Luca Luca · Uncategorized

One of the most common experiences following a significant loss is a deep, persistent feeling of tiredness.

It is not simply a case of ‘feeling a bit down’ or having slept poorly: many people describe a real loss of energy, as if their body were slowed down, weighed down, drained.

Even simple activities – getting out of bed, concentrating on a conversation, carrying out daily tasks – can require an unexpected amount of effort. This can cause concern: “Why do I feel so tired?”, “Is this normal?”, “Am I becoming depressed?”

Fatigue during bereavement is a real, widespread phenomenon deeply rooted in both the psychological processes and the neurobiological mechanisms of grief. Understanding it is essential to avoid misinterpretations and to support those experiencing it more effectively.

 

Fatigue during bereavement: a normal but poorly understood experience

In common parlance, grief is associated primarily with sadness, crying and nostalgia. Far less is said about the physical and mental exhaustion that accompanies it.

Yet, among the most well-documented physical symptoms of the grieving process are precisely:

  • persistent fatigue
  • difficulty concentrating
  • psychomotor retardation
  • a sense of ‘emptiness’

From a clinical perspective, these elements are not incidental, but central. Grief is a multidimensional experience, simultaneously involving:

  • cognitive processes
  • emotional experiences
  • physiological regulation
  • social functioning

Fatigue emerges precisely at the intersection of these levels. It is not an isolated symptom, but the result of a system attempting to adapt to a significant loss.

 

The grieving brain: why we lose energy

To understand the loss of energy during grief, it is helpful to consider what happens at a neurobiological level.

Meaningful relationships are not merely psychological experiences: they are structures learned by the brain. Emotional bonds are encoded through deep motivational systems, linked to neurotransmitters such as dopamine, oxytocin and endogenous opioids.

When a significant person passes away, the brain finds itself in a paradoxical situation:

  • on the one hand, it knows that person is no longer present
  • on the other, it continues to ‘search for them’ as if they were still there

This conflict generates an intense expenditure of energy. The nervous system is engaged in a process of continuously updating reality, which requires time and resources.

Mary-Frances O’Connor describes grief precisely as a learning process: the brain must learn that the world has changed.

This internal work is not visible, but it is extremely demanding. It is as if a part of the mind were constantly active, even when we do not realise it.

 

Grief as a cognitive and emotional burden

In addition to the neurobiological aspect, fatigue during grief is linked to a significant increase in mental load. Those experiencing a loss often find themselves:

  • constantly thinking about the person they have lost
  • reorganising their daily life
  • dealing with intense and fluctuating emotions
  • redefining their role and identity

This leads to cognitive overload. The mind is constantly engaged, even when it appears to be ‘doing nothing’.

Furthermore, grief often introduces a form of rumination: repetitive thoughts about what has happened, what might have been different, and what has been lost. This type of thinking, as well as keeping the pain alive, consumes mental resources and further reduces available energy.

 

The body in grief: a real physiological response

Fatigue during bereavement is not just psychological. It is also a bodily response. Bereavement activates stress systems involving:

  • increased cortisol
  • sleep disturbances
  • changes in appetite
  • muscle tension

In some people, this activation may be evident (agitation, anxiety), whilst in others it may take the opposite form: collapse, sluggishness, reduced energy.

From the perspective of nervous system regulation, we can observe two main patterns:

  • hyperarousal (anxiety, agitation, insomnia)
  • hypoactivation (fatigue, apathy, sluggishness)

Loss of energy often falls into this second pattern. It is a way in which the body attempts to manage a high emotional load.

 

Fatigue and ‘withdrawal’: an adaptive function

A common mistake is to interpret fatigue as a negative signal, something to be eliminated as soon as possible. In reality, in many cases, it serves an adaptive function.

Grief involves a profound disruption to the continuity of life. At this stage, the psychological system may temporarily reduce the level of arousal in order to:

  • limit exposure to overly intense stimuli
  • create an internal space for processing
  • protect against emotional overload

Social withdrawal and reduced energy are often part of this process. They do not necessarily indicate a blockage, but rather a phase of adjustment. Among the reactions considered normal in grief, we find:

  • a reduction in social activities
  • a need for isolation
  • a drop in energy
  • difficulty feeling pleasure

This does not mean that you are ‘getting worse’, but that you are going through a phase of the process.

 

When fatigue becomes more intense

Not all experiences of grief are the same. In some situations, fatigue can be more pronounced and persistent. This can happen, for example, when:

  • the loss was sudden or traumatic
  • the bond with the person was particularly close
  • there are other sources of stress or vulnerability
  • there is a lack of adequate social support

In these cases, the system may remain in a state of high energy expenditure or hypoarousal for a longer period. In some forms of more complex grief, fatigue is accompanied by:

  • marked difficulty in daily functioning
  • a persistent sense of emptiness
  • a general loss of interest

When these symptoms persist over time and significantly impair the person’s life, a more in-depth clinical assessment may be helpful.

 

The role of the ‘failure to recognise’ grief

One aspect that is often underestimated concerns the social context. We live in a culture that tends to have little tolerance for a slow grieving process. People are expected to ‘get back to normal’ relatively quickly. This can create an implicit pressure to function, even when internal resources are still limited.

Furthermore, many forms of loss are not fully recognised:

These experiences fall under what is known as unrecognised or unvalidated grief. When grief is not recognised, the person may:

  • downplay what they are feeling
  • force themselves to ‘carry on’
  • ignore the body’s signals

This increases the risk of burnout and makes fatigue even harder to understand.

 

What really helps when energy is lacking

Managing fatigue during bereavement requires a change of perspective. It is not about “getting back to normal straight away”, but about acknowledging the process that is taking place. Some useful guidelines:

1. Recognise that fatigue is legitimate

A loss of energy is not an anomaly. It is part of the work that the mind and body are doing.

2. Lower your performance expectations

Expecting to function as before increases feelings of failure and drains further resources.

3. Introduce micro-activities

Rather than forcing drastic changes, it can be helpful to:

  • maintain small routines
  • introducing light activities
  • encouraging a minimum of continuity

4. Focus on physiological regulation

Sleep, diet and exercise have a direct impact on available energy. Even small adjustments can make a difference.

5. Allow space for the process

Paradoxically, trying to ‘get over the grief’ too quickly can prolong the fatigue. Fatigue tends to lessen as the integration process progresses.

 

Fatigue and the transformation of the bond

A key point, often overlooked, is that grief is not just about loss, but about the transformation of the bond. The work the system is doing is not to “forget”, but to:

  • reorganise the relationship
  • integrate the meaning of the loss
  • redefining one’s way of being in the world

This takes time and energy. During the process, many people notice a qualitative shift:

  • the initial exhaustion gives way to moments of greater energy
  • memories become less unsettling
  • the presence of the person who has been lost is integrated in a different way

This is not a return to the previous situation, but a new configuration.

 

Fatigue following bereavement is a complex response, involving the mind, body and relational system.

It is not a sign of weakness, nor necessarily an indicator of illness. It is often a reflection of a profound process of adaptation, in which the brain, body and mind are trying to reorganise what has been thrown into question by the loss.

Understanding this allows you to:

  • reduce anxiety
  • avoid distorted interpretations
  • accompany the process with greater realism

Over time, for many people, energy does not return suddenly, but gradually, along with the possibility of living one’s life differently than before.