When you are actively losing weight this can upset the balance of cholesterol levels but usually settles down after a while.
Do you have the breakdown of your HDL Triglycerides etc? Total cholesterol tells you little about what is going on. If not, at the next appointment ask for a printout of your test results then come back and members will be able to say if they are good, bad or indifferent.
And lastly, it is your choice whether or not to accept the advice of a HCP and it is, ultimately, your decision.
Good luck and well done on your numbers!