KCR continued the hunger strike for the 10th day on Tuesday, Dec 8 at the state-run Nizam Institute of Medical Sciences (NIMS).
Speaking to reporters, NIMS director Prasada Rao said that the reports of KCR's blood tests show signs of deterioration and asked him to immediately call off the fast.
"If he continues the fast, this would lead to serious problems. What sort of problems we can"t say but this could endanger his life," he said.
A team of doctors monitoring KCR's health has asked his family members to convince him to end the fast.
"Currently he is on support therapy. But after a certain stage even the medicines will not work. He has to start taking food immediately," said Prasada Rao.
KCR was arrested on Nov 29 near Karimnagar town when he was heading to Siddipet town in Medak district for launching fast unto death demanding a separate Telangana state.
He was taken to Khammam town, where a court sent him to jail for 14 days. The TRS chief launched the fast in jail and he was shifted to a government hospital in the town the next day.