Doctors looking after the Dalai Lama in India say there is no cause for concern after he was admitted to hospital and Tibet's exiled spiritual leader will take part in a fast for Tibet on Saturday, aides said.

"He is doing fine. He is undergoing some checkups ... the doctors have told us that absolutely there is no cause for concern," Chhime Chhoekyapa, a senior aide to the exiled spiritual Tibetan leader, told Reuters from Mumbai on Friday.

"All they think he needs is a good rest."

The 73-year-old Dalai Lama was admitted to a hospital in Mumbai on Thursday with "abdominal discomfort". He had cancelled two foreign trips after complaining of fatigue.

In recent years, doctors have increased medical checks to ensure that the Dalai Lama was in good health.

A statement posted on the Dalai Lama's official website said he will join, from Mumbai, a 12-hour fast and prayers for peace and freedom that is organised by the Tibetan Solidarity Committee.

The Nobel Peace Prize winner had returned to Dharamsala, the north Indian town where he lives, on Sunday after a two-week visit to France mainly to give lectures on Buddhism, but during which he also criticised Chinese policies in Tibet.-Reuters