Grief has a body. This is something many people don't know until they experience it: that mourning shows up not only in the mind and heart but in physical, bodily ways that can be alarming if you don't know what to expect.
In the aftermath of losing someone to cancer, you may notice: profound physical exhaustion that sleep doesn't resolve, chest tightness or a heavy feeling in the sternum, difficulty breathing deeply, disrupted appetite (eating too little or too much), altered sleep patterns, increased susceptibility to illness (grief suppresses immune function), physical pain — headaches, muscle aches, stomach upset, brain fog, trouble concentrating or remembering things, and changes in heart rate.
None of these are imagined. The physiological reality of grief is well-documented. Grief activates the stress response, floods the body with cortisol and adrenaline, disrupts sleep architecture, and alters the functioning of the immune system. The chest pain that people associate with a "broken heart" is a real physiological phenomenon — the heart does respond to loss in measurable ways.
If you're an adult child who watched a parent suffer through cancer, the stress hormones of caregiving may have been coursing through your body for months or years before the loss. After death, the removal of that stress combined with the onset of grief can hit the body as a kind of double wave.
How to care for your body in grief: Eat, even when you're not hungry — simple, nourishing foods. Prioritize sleep, even when grief disrupts it. Move your body in gentle ways — walks, stretching, whatever is manageable. Accept physical affection if available — a hug, a hand held. Reduce alcohol and stimulants, which can worsen anxiety and disrupt sleep. Tell your doctor what you're experiencing, especially if physical symptoms are severe or persistent.
There is a difference between the normal physical symptoms of grief and medical conditions that require attention. If you experience chest pain that feels cardiac, shortness of breath, significant weight loss, or symptoms that worsen over time rather than fluctuate, please see a doctor.
Your body is doing the hard work of grief alongside your mind. Be patient with it. Tend to it with the same gentleness you'd offer someone else who had been through what you have.