u/RaiseMassive5262

Hello, I'm 25F and my grandpa at 93 just passed of stomach cancer. I work in the medical field in Nuclear medicine and from my research stomach cancer isn't hereditary. My grandpa, and his 2 brothers, along with his mother all died of stomach cancer. They were all in their 60s-70s when passing except for my grandfather. I'm wondering if them being Peruvian has more to do with developing the cancer then hereditary genes? Maybe how they grew up? What should I do moving forward? I will discuss frequent endoscopy/colonoscopy with my primary doctor.