How old does someone have to be in order for it to be considered as them dying of old age?
There is no exact cutoff for this, but typically people will
only say that a person "died from old age" if they were over 60
years old at the time of death.
There is not a specific age. Dying of old age is just a saying for when an older person's body becomes too weak to continue functioning. They don't die of illness or injury. They just fade out.
No - dying of a disease would be considered just that - dying from that disease that made the person ill eg cancer.....Dying of natural causes would be like dying from a failure of an organ eg the heart from undetected/diagnosed weakness or frailty or from old age when the body lets you down through age rather than illness