UPDATE: On Dec. 11, the Adams County Coroner released the identities of the two people found dead inside the burning home as that of Jose Vincent Grajeda, 61, and Axel Jossue Perez Castellon, 27.

Longevity is trending, and the consumer health industry has started broadening its scope, beyond the confines of “how to get a six pack in six weeks” or “how to become alarmingly musclebound before ...