Doctors today said they were concerned about the health of Anna Hazare as his fast entered the tenth day.

“We have examined him this morning. There is stability in blood pressure and heart beat. He has taken rest. He had six litres of water and the ketone levels have come down,” Dr Naresh Trehan told presspersons here.

Dr Trehan said it was a “matter of concern” that for the past 10 days, Hazare was on fast and that he has not eaten anything.

“This will have an effect on his body...Till now, he has already managed for 10 days and he is stable. We are monitoring his health round-the-clock,” he said, adding that doctors were checking his condition every two hours.