There are about 25 people in the project I'm working on now, 30 with part timers. In a year, 3 of them were diagnosed. The last guy, who had a successful operation for prostate cancer, had a second case, skin cancer, on the back of his hand 2 months later.
The youngest is just about 35, a very pleasant person, very active physically, and athletic. She also has quite a healthy lifestyle. She had a softball sized tumor discovered by accident. She lost a kidney, her spleen, and part of her pancreas and has been on chemo for a nearly a year. She just had another operation to remove a brain tumor a week ago.
The other case was breast cancer.
On the positive side, they are all still alive and doing well. I had almost nothing but neat contacts with them while working with them, so that part is nice.