This next chapter in the flagship Generation Iron film series explores the controversial world of professional natural bodybuilding by following top pros competing for the Natural Olympia title in a league dedicated to ensuring all competitors are free of performance enhancing drugs. With drug use evolving at a rapid pace across sports and entertainment, natural bodybuilding as a whole has been criticized and questioned. Can the league guarantee that these competitors are truly natural?
You can now watch Generation Iron: Natty 4 Life online on the following streaming providers in the United States.
| Directing | Vlad Yudin | Director |
| Writing | Vlad Yudin | Writer |
| Production | David Gendron | Executive Producer |
| Editing | Khushnuda Shukurova | Editor |
| Crew | Evan Rosenberg | Cinematography |
| Crew | Harrison Stagner | Cinematography |
| Production | Edwin Mejia Jr. | Producer |
| Production | Russ Riggins | Executive Producer |
| Production | Vin Sorrentino | Producer |
| Production | Vin Sorrentino | Production Manager |
| Production | Vlad Yudin | Producer |
| Production | Viviana Zarragoitia | Executive Producer |
| Sound | Josh Heilbronner | Sound Mixer |