An Italian doctor says Emma Morano, at 117 the world's oldest person, has died in her home in northern Italy.
Bava also lives in Verbania and had been her physician for almost a quarter of a century.
Ms Morano has said that her longevity was partly down to genetics: her mother reached 91 and several sisters reached their centenary.
"He told me, "Either you agree to marry me or I will kill you, '" Morano said". She credited her long life to good genes and steady diet of 3 eggs a day - 2 of them raw.
FILE - In this Tuesday, Nov. 29, 2016 file photo, Emma Morano sits in her home on the day of her 117th birthday in Verbania, Italy.
According to her grandchildren, Morano, who lived through two world wars, knew 11 popes and 12 Italian Presidents, died peacefully in her sleep.
She had been bed-bound during her latter years.
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Her life not only spanned three centuries but also survived an abusive marriage, the loss of her only son, two World Wars and more than 90 Italian governments.
In an interview with AFP news agency past year, Morano put her longevity down to her diet.
She had clung to her independence, only taking on a full-time carer a couple of years ago, though she had not left her small two-room apartment for 20 years.
He said he had last visited Morano on Friday, and she had talked to him and held his hand as she normally did. In a 2011 interview, Morano claimed to have never wanted to marry in the first place and having only given in because she was threatened.
The title of World's Oldest Person will now go to Violet Brown, a Jamaican woman who was born in 1900 exactly. "[She] does not want to eat meat because she doesn't like it anymore and someone told her it causes cancer".
Morano left her husband in 1938 because he would beat her.