Fat transfer, which involves using your own fat to plump up volume loss in other parts of your body, has a 46% "Worth It" rating (as of today). But beef fat is a foreign material and there's no telling what can happen if you use it. Case in point:
Janet Hardt, 63, had cooked beef, extracted the fat and injected the substance into her face around the mouth and chin areas. According to the Chicago Sun-Times, she had done this several times before in order to copy the physical effects one would get from facial injections such as Juvederm or Restylane.
Hardt had gone to the hospital when she started to feel a burning sensation in her face after she performed the injections. She died that same evening. The official cause of death was peritonitis, an inflammation of the abdominal tissue caused by a bacterial infection.