Can grief or heartbreak bring on cancer?

The story is always some version of the same one. Someone lost a husband, a mother, a child. A year later, they found a lump. The family looks at the sequence and draws a line between the two points.

It is one of the most human things there is — the mind refusing to accept that a terrible thing happened for no reason, and reaching for the other terrible thing that came just before.

NCI keeps a page on cancer myths, and one of the entries asks whether attitude determines cancer risk or survival. The answer is direct: there is no convincing scientific evidence that links a person's attitude to their risk of developing or dying from cancer.

That covers the belief behind this question. Emotional state, outlook, the sense of having given up — none of these has been shown to determine who gets cancer or who survives it.

NCI's page does not list grief or outlook as something that determines who gets cancer or who dies of it.

Two hard things can land in the same year without one causing the other. NCI's myths page finds no convincing evidence of a link between attitude and cancer. It points readers to a separate NCI fact sheet on stress for more.

Nothing here says grief is easy to live with. It can be exhausting and make daily tasks harder. That is a reason to look after a grieving person, not a reason to hand them responsibility for a disease. NCI notes that a positive attitude may help people stay connected and active, and that activity and emotional support may help with coping.

This idea is not neutral. Follow it to its conclusion and you arrive somewhere cruel.

If grief caused the cancer, then the person failed to grieve correctly. If emotion drives the disease, then any bad day becomes a threat, and every sad hour needs suppressing. People end up performing cheerfulness for their families while frightened underneath, with no place to put the fear.

That is a heavy load to carry through treatment, and it is built on something NCI says the evidence does not support.

• Name the loss out loud with your care team. Your care team can only support you if they know what you are carrying.
• Ask for a referral. Many cancer centers have social workers, counselors and bereavement services. Access usually starts with saying you need it.
• Let people help with practical things. Meals, rides, forms. Grief and treatment both eat energy, and there is only so much of it.
• Allow the sadness to exist. You do not have to be positive to be treated well or to do well.

Losing someone and then facing your own diagnosis is an unfair amount to hold at once. If part of you suspects the first caused the second, you can put that suspicion down. NCI finds no convincing evidence for it.

Nothing NCI reports says you grieved your way into this illness.