Oldest doctor ever (female)

When Dr. Leila Denmark (1 February 1898–1 April 2012) of Portal, Georgia, USA, retired in May 2001, aged 103, she was the oldest practicing physician ever. She died on 1 April 2012 at the age of 114. Having reached 114 years old, Dr Denmark is the oldest person to have held the title of “Doctor" (she specialized as a paediatrician). She was the fourth-oldest living person in the world. One of her secrets to longevity was a diet low in sugar – she refused a piece of her 100th birthday cake because of its sugar content.