Is high cholesterol hereditary?

im in the same boat with high cholesterol running in the family. i got my blood tested a few years back and the doctor said my numbers were perfect he actually thought i was a vegetarian. just be sure to eat health and exercise consistently. i play golf so im walking a lot and i go to the gym frequently. i just got my blood tested a couple days ago so im hoping for good news. do an activity to keep fit and it should lower your bad cholesterol.