I take vitamin D. Sometimes high cholesterol can run in the family.
I'm assuming this is me not taking care of myself.
Don't assume.
Once you are on those, docs usually want to work up blood tests every six months to keep up to date with your needs and the effectiveness of the dosage.
Alter your diet a bit and watch for your next bloodwork.
I took all mine a little early, but I felt a need after becoming quite hot outside.
I get the same results these days. Lots of cholesterol, but just a little too much of the bad kind. Doc says to eat more greens, certain grains and get more exercise.