Keep in mind what role HDL plays, it binds with the LDL or bad cholesterol
and takes it back to the liver to be eliminated or recycled. Your LDL level is very low
and near optimal. The less LDL in your system, the less HDL you need.
The best way to increase HDL is exercise, but only after you have discussed it with your doctor. To have an effect on HDL, you really need between 30 - 60 mins a day at 75% of your max predicted heart rate (220-age) most days of the week.