Dwayne "The Rock" Johnson is skinny now primarily due to a deliberate and dramatic weight loss of about 50-60 pounds for his role in the biographical drama "The Smashing Machine," where he portrays MMA and UFC fighter Mark Kerr. This transformation involved a shift from his usual massive, muscular build to a leaner physique that authentically fits the character. Additionally, The Rock has mentioned digestive health issues that started in early 2024 which also motivated changes in his diet and body composition. He has dismissed rumors about weight loss drugs and emphasized that this was a conscious choice for the sake of his craft and health. Furthermore, he is preparing to slim down even further for another upcoming role as a whimsical elderly character named "Chicken Man" in the film "Lizard Music," so his transformation is ongoing rather than a sign of illness.