Some context: Chapter 27 is a 2007 biographical drama film depicting the murder of John Lennon by Mark David Chapman. It was written and directed by Jarrett Schaefer, based on the book Let Me Take You Down by Jack Jones, produced by Robert Salerno, and stars Jared Leto as Chapman. The film takes place in December 1980, and is intended to be an exploration of Chapman's psyche. Its title is a reference to J. D. Salinger's novel The Catcher in the Rye, which has twenty-six chapters, and suggests a continuation of the book.
The script took Schaefer four years to write, but when it was finished, the film came together quickly. With the help of producers Alexandra Milchan and Robert Salerno, Schaefer cast Jared Leto as Mark David Chapman. For his role, Leto gained 67 pounds (30 kg) by drinking microwaved pints of ice cream mixed with soy sauce and olive oil every night. Gaining the weight, he said, was tougher than dieting himself into skeletal shape for his role as drug addict Harry Goldfarb in Requiem for a Dream (2000). The abruptness of Leto's weight gain gave him gout. He had to use a wheelchair due to the stress of the sudden increase in weight put on his body.  After the shooting of the film, Leto quickly went on a liquid diet. He explained, "I've been fasting ever since. I've been doing this very strange, like, lemon and cayenne pepper and water fast. I didn't eat any food for 10 days straight; I think I lost 20 pounds that first 10 days." Losing the excess weight after Chapter 27 proved a challenge. "It took about a year to get back to a place that felt semi-normal," he said; "I don't know if I'll ever be back to the place I was physically. I'd never do it again; it definitely gave me some problems."  Twenty-two years prior to this film's production, actor Mark Lindsay Chapman, while professionally using the name Mark Lindsay, had been almost cast as John Lennon in the biopic John and Yoko: A Love Story (1985). Yoko Ono had been deeply involved in the production and had herself been initially impressed with his audition and approved his casting prior to discovering his full name was Mark Lindsay Chapman. She then nixed his casting on the grounds it was "bad karma", and a great deal of press attention was given to his having almost gotten the role. The director of Chapter 27, Jarrett Schaefer, auditioned many Lennon impersonators, but was especially impressed with Mark Lindsay Chapman's tape because he conveyed the "tough town" street-smart quality of Lennon that the impersonators failed to convey, as they always played Lennon as larger-than-life. Schaefer described Lennon as having a "chip on his shoulder and always cracking these cynical one-liners", and felt that actor Chapman was best at conveying this quality. Schaefer had some difficulty negotiating the casting with the film's producers because of Chapman's name. After Chapman was cast, he asked Chapman how he should be billed to which Chapman replied "Mark fucking Lindsay Chapman. That's my fucking name." Schaefer remarks that this was so reflective of how Lennon talked, it just reinforced his sense that Chapman was right for the part.
What problems did it give him?
A: He had to use a wheelchair due to the stress of the sudden increase in weight put on his body.
Some context: Sir Charles Spencer Chaplin,  (16 April 1889 - 25 December 1977) was an English comic actor, filmmaker, and composer who rose to fame in the era of silent film. Chaplin became a worldwide icon through his screen persona "the Tramp" and is considered one of the most important figures in the history of the film industry. His career spanned more than 75 years, from childhood in the Victorian era until a year before his death in 1977, and encompassed both adulation and controversy. Chaplin's childhood in London was one of poverty and hardship.
Charles Spencer Chaplin was born on 16 April 1889 to Hannah Chaplin (born Hannah Harriet Pedlingham Hill) and Charles Chaplin Sr. There is no official record of his birth, although Chaplin believed he was born at East Street, Walworth, in South London. His mother and father had married four years previously, at which time Charles Sr. became the legal carer of Hannah's illegitimate son, Sydney John Hill. At the time of his birth, Chaplin's parents were both music hall entertainers. Hannah, the daughter of a shoemaker, had a brief and unsuccessful career under the stage name Lily Harley, while Charles Sr., a butcher's son, was a popular singer. Although they never divorced, Chaplin's parents were estranged by around 1891. The following year, Hannah gave birth to a third son - George Wheeler Dryden - fathered by the music hall entertainer Leo Dryden. The child was taken by Dryden at six months old, and did not re-enter Chaplin's life for 30 years.  Chaplin's childhood was fraught with poverty and hardship, making his eventual trajectory "the most dramatic of all the rags to riches stories ever told" according to his authorised biographer David Robinson. Chaplin's early years were spent with his mother and brother Sydney in the London district of Kennington; Hannah had no means of income, other than occasional nursing and dressmaking, and Chaplin Sr. provided no financial support. As the situation deteriorated, Chaplin was sent to Lambeth Workhouse when he was seven years old. The council housed him at the Central London District School for paupers, which Chaplin remembered as "a forlorn existence". He was briefly reunited with his mother 18 months later, before Hannah was forced to readmit her family to the workhouse in July 1898. The boys were promptly sent to Norwood Schools, another institution for destitute children.  In September 1898, Hannah was committed to Cane Hill mental asylum - she had developed a psychosis seemingly brought on by an infection of syphilis and malnutrition. For the two months she was there, Chaplin and his brother Sydney were sent to live with their father, whom the young boys scarcely knew. Charles Sr. was by then a severe alcoholic, and life there was bad enough to provoke a visit from the National Society for the Prevention of Cruelty to Children. Chaplin's father died two years later, at 38 years old, from cirrhosis of the liver.  Hannah entered a period of remission but, in May 1903, became ill again. Chaplin, then 14, had the task of taking his mother to the infirmary, from where she was sent back to Cane Hill. He lived alone for several days, searching for food and occasionally sleeping rough, until Sydney - who had enrolled in the Navy two years earlier - returned. Hannah was released from the asylum eight months later, but in March 1905, her illness returned, this time permanently. "There was nothing we could do but accept poor mother's fate", Chaplin later wrote, and she remained in care until her death in 1928.
What other hardships did he experience?
A:
He lived alone for several days, searching for food and occasionally sleeping rough,