NEW HEALTH FEARS FOR NEWHART, 91!

Frail TV legend wastes away to 105 lbs. but won’t stop working

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SHOCKED by the frighteningly gaunt and frail appearance of beloved comic Bob Newhart, friends of the hard-driving star fear he’s working himself into his grave, sources say.

An alarmed pal says the 91-year-old jokester “looked like death warmed over” during a remote video appearance shown at the Emmy Awards last month.

“He’s absolutely skeletal and he could topple over at any moment. But he stubbornly refuses to quit performing,” the source says.