I am a 24 year old female, following symptoms: very very fatigue, severe headaches, but not constant, I suffer from 2 degree AV block, diagnosed. Also I have high cholesterol, diagnosed afterIi was 2 years old. (dad has it, grandma, and aunt). Also I have gotten bloodtests done, only thing was low D-vitamin. I am very nauseated, but doesnt trow up. I am also dizzy. I cant take care of my study, because I am SOOO tired. I have a BMI of 22,5. I dont drink, i dont smoke.

Summarized question: What causes headaches and dizziness while having high cholesterol and atrioventricular block?