“Anna Hazare's fasting has taken a toll on his health; but for his age, he is strong and continues to be well,” said a senior physician, member of the team of doctors monitoring the social activist's health at Ramlila Maidan here.

“After 160 hours without food, 74-year-old Anna has lost five kilos. His blood and urine samples are showing ketone particles that are created by the body during starvation, and are meant to provide an alternative source of fuel from fatty acids. Mr. Hazare was 71 kg before his fasting and now, after a week, he has lost 5 kg,” said Dr. Balram Gupta of Medanta Medicity, one of the doctors taking care of Mr. Hazare.

“He is weak and says that he is a feeling a bit tired,” said a member of Team Anna.

“Formation of ketone particles is dangerous as it may affect vital organs like kidney and liver. After 60 hours of continuous fasting, any human being's body will get dehydrated and blood sugar levels will go down... On an average, a person can fast and yet remain safe and healthy for up to about two weeks,” noted a senior doctor attending to Mr. Hazare.