Japan is often claimed to have "lost" a lot of seniors who have actually died but were never recorded. The explanation for this has ranged from welfare fraud (

Japan is often claimed to have "lost" a lot of seniors who have actually died but were never recorded. The explanation for this has ranged from welfare fraud (relatives continuing to collect on the dead) to simple incompetence. But either way AFAIK there is strong evidence that quite a large number of dead people slip through the cracks and are never marked as dead, at least for statistical purposes, which inflates life expectancies.