Joaquin Phoenix’s Weight Loss: How the “Joker” Star Shed 52 lbs

Here are the best details on Joaquin Phoenix’s weight loss, including insights on his methods, challenges, and updates on his transformation for the sequel.

Sanchari Bhattacharya
Written by Sanchari Bhattacharya , Health & Fitness Expert
Updated on Apr 14, 2025 | 12:58 PM IST | 5.6M
Joaquin Phoenix’s weight loss
Joaquin Phoenix’s Weight Loss (Image Source: Getty Images)

Joaquin Phoenix’s physical transformation in preparation for his role as Arthur Fleck in Joker garnered applause from the public and critics as the talented actor dropped 52 pounds to do justice to the role and embody the character’s mental and emotional descent accurately. Talking about the dramatic transformation, Joaquin revealed that he mainly survived on lettuce and steamed vegetables.

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Joaquin Phoenix’s weight loss diet was quite controversial and raised many eyebrows, whereas his dedication to his craft was widely acclaimed. The talented actor revisited the diet for the sequel of the film. Although he refused to go through the specifics, he revealed that “this time, it felt a bit more complicated,” especially because he had to rehearse for a dance sequence. Moreover, he has also revealed that following such a strict diet and workout regime was difficult because of his age, and “this is probably it” for him. Read on to find out more about Joaquin Phoenix’s secrets for weight loss, but first, take a look at his career trajectory.

Who is Joaquin Phoenix?


Joaquin Phoenix is an exceptionally talented actor known for his intense and deeply immersive performances. Born on October 28, 1974, in San Juan, Puerto Rico, he grew up in a unique, unconventional family that traveled extensively before settling in Los Angeles. 

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Joaquin began his acting career as a child alongside his siblings, but his true breakthrough came with the 2000 film Gladiator, where he portrayed the complex and troubled Emperor Commodus.

Phoenix is celebrated for his dedication to his roles, often undergoing physical and psychological transformations to embody his characters. This commitment is evident in his performances in films like Walk the Line, where he played Johnny Cash, and Joker, which earned him an Academy Award for Best Actor. 

Off-screen, Joaquin is known for his activism, particularly in animal rights and environmental causes. Despite his fame, he maintains a relatively private life, valuing authenticity and depth both personally and professionally.

Read More: Tom Hanks’ Weight Loss Saga Is Incredible: Check out His Diet And Workout

How Did Joaquin Phoenix Lose Weight?


To embody Arthur Fleck in Joker, Joaquin Phoenix underwent a drastic physical and mental transformation, losing 52 pounds through a strict diet. This extreme weight loss provided Phoenix with a heightened sense of control and focus, essential for delving into the character's complex psyche. 

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Phoenix's restrictive diet consisted primarily of low-calorie foods, and he meticulously adhered to it to achieve the gaunt appearance required for the role. Beyond the physical transformation, the weight loss impacted his mental state, allowing him to connect more deeply with Arthur's vulnerability and descent into madness. 

Joaquin Phoenix opted against consulting a nutritionist for his weight loss regimen during Joker, relying instead on his own research and determination. His decision reflected his commitment to the character's authenticity and underscored his approach to fully immersing himself in roles.

Phoenix dedicated himself to understanding the nuances of the character, studying mental illness and social isolation to bring authenticity to his portrayal. The combination of his physical transformation and intense character study culminated in a haunting and powerful performance, earning him critical acclaim and an Academy Award for Best Actor.

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Joaquin Phoenix’s Weight Loss Diet Plan


Joaquin Phoenix's weight loss diet plan for his role in Joker was incredibly strict and carefully monitored by a medical professional to ensure his safety. Here's an outline of the diet plan he followed:

1. Calorie Restriction: Phoenix's diet was greatly calorie-restricted, consuming significantly fewer calories than his usual intake to promote rapid weight loss.

2. Simple, Low-calorie Foods: The diet primarily consisted of simple, low-calorie foods. Research suggests he ate foods like apples, lettuce, and steamed vegetables. 

3. Controlled Portions: Portion control was critical, with precise measurements to ensure he didn't exceed his daily caloric limit.

4. Hydration: Staying hydrated was essential, with a focus on drinking plenty of water throughout the day to support metabolism and overall health.

Water for weight loss

5. Doctor Supervision: The entire diet plan was supervised by a doctor to monitor Phoenix's health and ensure he wasn't at risk of malnutrition or other health issues.

Phoenix's dedication to this demanding diet, combined with his disciplined approach, enabled him to achieve the drastic weight loss necessary for the role, contributing significantly to his transformative performance in Joker.

What Does Joaquin Phoenix Eat?


To achieve his dramatic weight loss for Joker, Joaquin Phoenix followed an extremely restrictive diet, though not quite as extreme as rumored. Phoenix's commitment to the role included a plant-based diet, which he has passionately advocated for as a longtime vegan. His partnership with PETA further highlights his advocacy for animal rights, aligning his personal beliefs with his professional choices.

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With his eating habits in mind, the actor aimed to shed a significant amount of weight for the role, striving for his best physical transformation yet. Initially, director Todd Phillips was nervous as Phoenix started at 180 pounds in June to reach 125 pounds by September. However, as it turned out, Phoenix met the physical expectations for the character quite well. 

Contrary to rumors of consuming only an apple a day, Phoenix clarified his diet included more variety: lettuce and steamed green beans alongside apples. He became intensely focused on even minor weight changes, developing a near-obsession with fluctuations as small as 0.3 pounds. This meticulous attention to detail was mentally challenging and contributed to a disordered eating pattern.

The physical difficulty of this process was evident. Phoenix described how even walking up flights of stairs became a major effort, making his iconic stair dance scene in the film even more meaningful. This extreme regimen underscores Phoenix's dedication to fully embodying the character of Arthur Fleck.

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Joaquin Phoenix’s Workout Routine

Joaquin Phoenix’s weight loss for Joker was achieved with minimal emphasis on traditional workout routines. While specific details about his exercise regimen remain somewhat elusive, it’s widely believed that he relied heavily on intense cardio exercises. Instead of a structured gym routine, Phoenix reportedly focused on activities like brisk walking or light jogging to burn calories and support his weight loss. 

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This approach, combined with a strict diet, was instrumental in achieving his emaciated look for the role. His dedication to the character’s physical transformation underscores his commitment to delivering an authentic and compelling performance in the film.

Joaquin Phoenix Before and After Weight Loss Photos

Before

Joaquin Phoenix’s Weight Loss

(Image Source: Getty Images)


After

Joaquin Phoenix’s Weight Loss

(Image Source: Getty Images)


Joaquin Phoenix’s weight loss for Joker brought director Todd Philips’s vision to life, who wanted the character to look “hungry and unhealthy.” The transformation took such a drastic toll on him that he needed to convince himself before walking up a staircase. Joaquin’s dedication embodies the lengths actors go for the craft. However, we should keep in mind that he had a doctor help him through the process, and it’s never advised to follow such a strict diet without a professional’s advice. 

FAQ's

Was Joaquin Phoenix's weight loss for Joker safe?
Joaquin Phoenix’s weight loss for the film was extreme and may not have been fully safe. Such drastic measures can have health risks, though Phoenix’s transformation was closely monitored by professionals to manage potential effects.

How did Joaquin Phoenix's weight loss affect his performance?
Phoenix’s significant weight loss for Joker deeply enhanced his performance, helping him embody Arthur Fleck’s physical and emotional anguish. His emaciated appearance added authenticity to the character’s suffering and psychological decline.

What challenges did Joaquin Phoenix face during his weight loss journey?
Phoenix faced numerous challenges, including severe physical weakness, emotional stress, and strict dietary restrictions. These hardships were part of his intense commitment to achieving the dramatic transformation required for his role in Joker.

Did Joaquin Phoenix gain the weight back after filming Joker?
Yes, Joaquin Phoenix gained back the weight after filming Joker. Following the completion of the film, he returned to a healthier weight, a common practice for actors after fulfilling extreme physical transformations for roles.

Did Joaquin Phoenix lose weight for the movie The Master?
For The Master, Phoenix did not undergo significant weight loss. Unlike his Joker transformation, his role in The Master did not require extreme physical changes, focusing instead on his performance and character development.

About The Author
Sanchari Bhattacharya
Sanchari Bhattacharya
Health & Fitness Expert

Sanchari, a certified Health & Nutrition Life Coach and Naturopath, has 10+ years of experi...

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