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Among parents who lost an adult son to an accident or military conflict, the authors reported increased occurrence of lymphatic and hematological malignancy—cancers of the blood, bone marrow, and lymph nodes—along with skin and lung cancer.8 War kills, and so, it seems, can deep emotional loss. As for cancer, so with other illnesses. In a Danish nationwide study, grieving parents had double the risk of multiple sclerosis.9
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