Do you eat any beef? What about saturated fat (like coconut oil)?
I was able to raise my cholesterol from 130 to 218 (too high) by eating that + eggs. I also took a digestive supplement with ox bile. HAN says that people with low cholesterol have low bile and thus absorb less cholesterol from food.
I'm not sure what worked for me, but I'm off oxbile and eating only 1 egg per day (not 3) to bring my cholesterol closer to the 180 ideal.