Being "genetically predisposed to" a health problem means that you're more likely to have that problem than most people because the problem runs in your family:
Some people are genetically predisposed to certain kinds of cancer.
This phrase sounds academic or scientific.
The word "genetically" comes from "gene", which is a piece of information that is passed from parents to children. Some other ways that we use "genetically" are:
- A genetically modified organism is a plant or animal whose genes have been changed by scientists.
- Identical twins are genetically identical because they have the same genes.
Being "predisposed to" something just means that that thing often happens. You can use it like this:
That breed of dog is naturally predisposed to violence.
I'm predisposed to believe people when they tell me something.