Cancer diagnosis. Skips generation?

So my grandfather died @ 38/39) my father (youngest)at that time was 10 years old the only thing he know about my grandfather death is that he had cancer thats all , my father and all of his sibling range in age of 75-55 none of them had cancer diagnosed yet but they might have some cholesterol issue but again none of them had any heart ailments my father have his full body profile every year and lipid profile every 3 to 6 month to manage cholesterol .Now coming to question i am an 6 ft male used to weigh around 90kgs and was a wrestler but in2020 had an career ending injury which forced me to retire and while at a orthopaedic, he checked my weight which came 83 kgs he got worried because i am not working out eating the same diet since last 10 years , when he asked about my family health conditions he told me cancer passes on from grandfathr to grandson(skips generations) should i be worried about cancer, if yes what should i do? Do cancer skips generation ? Although i feel healthy