Hyperamnesia is not strictly a disease, but an extremely rare medical anomaly that normally has no effect on the average life expectancy of the patient, so the average life expectancy of a person with hyperamnesia cannot be clarified. Patients with hyperamnesia are unable to forget the sensations, smells, sounds, tastes and thoughts they have experienced due to their overwhelming memory capacity, which can cause mental and psychological distress and stress to the patient, but is essentially harmless to the body.