In a letter published in the Guardian newspaper on Wednesday, Boston University’s physician Sondra Crosby and London-based clinical psychologist Brock Chisholm warned that his physical and mental health were at risk after conducting the most recent exam last October.
"While the results of the evaluation are protected by doctor-patient confidentiality, it is our professional opinion that his continued confinement is dangerous physically and mentally to him and a clear infringement of his human right to healthcare," they said.
He faces arrest by UK police if he ventures out for breaching bail conditions, although charges against him have long been dropped. The activist fears extradition to the United States where he is wanted for leaking the damning Iraq War logs.