If you make the proper lifestyle changes that include the proper diet and getting exercise, you can get off them for a while and them get retested
in 6 months
or so and see if you have lowered your number
without meds and are stable. I know many people that have done that, but unfortunately for many it is easier to just take the pill which will lower their cholesterol without the work.
Remember, do not start any new exercise routine without getting your doctor's approval.