Hey great question. Some cancers can have a genetic component, for example pheochromocytoma runs in my family. It’s a rare type of cancer of the adrenal gland. There’s a mutation in a particular genes that increases the risk of getting this cancer and that mutation is in my family. You can get genetic testing to figure out if you have the mutation- however even if you have that mutation it doesn’t mean you’ll automatically get the cancer..
it just means you have a higher risk and should be that much more careful about staying healthy..