The boy, who like his parents was not identified, weighed 210 pounds. Doctors and social workers concerned about his welfare had called the police after he was brought in twice for treatment, The Sun newspaper reported on Friday.
The parents were arrested in March after being questioned by the police in King’s Lynn, in Norfolk. The father, 49, and the mother, 44, were released on bail, a police spokeswoman said.
The family was reunited, and this week, in a letter of intent, the couple agreed to improve their son’s health.