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Actors Undergo Extreme Transformations for Coveted Roles
16 Nov
Summary
- Christian Bale lost 62lbs for The Machinist, eating just a tin of tuna and an apple a day
- Charlize Theron gained 50lbs for Tully, falling into depression due to unhealthy diet
- Cillian Murphy survived on an 'almond a day' for Oppenheimer role

In the world of Hollywood, some actors have gone to incredible lengths to transform their bodies for coveted roles. According to a recent news report, Christian Bale, Charlize Theron, and Cillian Murphy are among the stars who have undergone extreme physical changes to embody their characters.
Back in 2004, Christian Bale famously lost a staggering 62lbs for his role in the psychological thriller The Machinist, slashing his weight from 182lbs to just 120lbs. The actor achieved this by surviving on a meager diet of a tin of tuna, an apple, and a black coffee per day, while still exercising. Bale's co-star later revealed that the extreme weight loss was the result of a simple typo in the original script.
Similarly, Charlize Theron has transformed her body multiple times for roles. In 2003, she gained 30lbs by indulging in doughnuts and potato chips to play serial killer Aileen Wuornos in Monster, for which she won an Oscar. More recently, in 2018, Theron gained an astonishing 50lbs for her role in Tully, but the actress struggled with the effects, falling into a deep depression due to the unhealthy diet.
Cillian Murphy also pushed his body to the limit for his acclaimed performance as J. Robert Oppenheimer in the 2024 film Oppenheimer. The Irish actor revealed that he only survived on an 'almond a day' during his intense preparation, warning that his transformation was "not healthy."
These actors' dedication to their craft is undeniable, but the physical and mental toll of such drastic measures has raised concerns about the safety and sustainability of these transformations. As the industry continues to demand more from its stars, the question remains: how far is too far when it comes to achieving cinematic perfection?




