Yes. Your liver makes cholesterol and your intestines absorb it from what you eat. If you have a liver that makes tons of cholesterol and/or have intestines that are extremely efficient at absorbing it from your food, you can develop high cholesterol. These are things that you are born with that you can not fundamentally change about your body with today's technology.
Yes. Although what you eat affects your cholesterol, the tendency to a high cholesterol is inherited. Certain types result in extremely high cholesterol levels.
Change it. Yes but you can change it by consuming healthy food. Stop high carb foods. Consume plenty of eggs, flesh food, healthy fats, vegetables. For more, read this short article: https://www.kaushikmd.com/get-started/
If I have inherited high cholesterol. How can I lower it when diet, exercise and medicines do not seem to work?
Chokedterol. Medications. Read more...
Is there a difference between high cholesterol due to poor diet, and high cholestoral that had been inherited?
No difference. You can't distinguish the cause by the measured values. Read more...