I am a 41 year old male, who is in very good general health. I exercise very regularly, eat well, don t smoke, etc. In October my lipids test showed I had an LDL cholesterol count of 160 (high), total non HDL of 188, and HDL of 50. So my doctor wanted me to lower my LDL. I got tested earlier today, and with all my other life style habits (exercise, et al) staying the same, via my diet I lowered my LDL to 130 and non HDL to 141, but my HDL fell to 35! What could have caused this sudden drop in HDL if all my other habits were relatively unchanged?