Had Cholestrol Around 200 Plus (VDL) Three Years Back When

Had cholestrol around 200 plus (VDL) three years back when I got my blood tested for lipid profile. Started walking exercise and continued it with food control,,avoiding oily fried stuffs, Since bad cholestrol levels remains un controlled even after this procedure, doctor advised me to take medication autorvastatin(Lipororm.5mg daily and now i have taking this for two years. Is it advisable to continue wtih medication, as it has some side effects. I am 62 years of age retired officer,Help with your medicals tips and suggest proper food diet regulations,suitable less harmful oils for daily use in curries...