The hard-working owner of the Park Hotel in Kenmare, Co Kerry, and no-nonsense rescuer of hostelries on RTÉ's 'At Your Service', was diagnosed with the condition in March last year.
"I had no symptoms," said Francis who is lucky to have a vigilant GP who was monitoring him with regular blood tests.
The 63-year-old was put on medication but he was determined to try to control his blood-sugar levels by adopting a new eating regime and cutting portions.
"I had a constant headache for the first six weeks. I would say to others who are embarking on the same road that this is the time when the battle is won or lost."