What's his secret? "I'm a stubborn old man," he told the Associated Press. "I refuse to give up."
And the former college professor tests his blood up to a dozen times a day, bringing updated charts of his condition to every doctor visit.
Bob's younger brother was one diabetic to die young. "I watched Jackie die by starving to death," he said. "Before insulin, diabetics would just die because eating doesn't make any difference: anything that you ate couldn't be converted and you literally starved to death because your body couldn't absorb anything."
Since 1978, Krause has relied on his insulin pump to administer dosages into his stomach. He also gets a more precise reading of his blood sugar levels by pricking his finger for a test strip that is read by a machine. Krause praises the advent of blood testing as one of the most life-changing moments in diabetes medicine.
Like his dad, Tom has diabetes.