12 actors who transformed their bodies incredibly for their films

Occasionally the movie stars have drastically changed their body to suit the role of a film, sometimes even at the expense of their own health, and subsequently have had to go to dieticians, endocrinologists and other medical specialists to recover from their transformations.

1. Christian Bale
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2. Charlize Theron
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3. Chris Pratt
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4. Eric Bana
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5. Glenn Close
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6. Hilary Swank
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7. Hugh Jackman
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8. Jared Leto
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9. Matt Damon
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10. Matthew McConaughey
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11. Robert De Niro
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12. Tom Hardy
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