Same as you, I was diagnosed with high LDL cholesterol and triglycerides a few years ago. I was eating well (almost never eating out/ takeout, eating basically a Mediterranean diet) fit (BMI 25, moderate intensity cardio 6-8 hours a week, plus a couple sessions of resistance training). At the same time I also was diagnosed with pretty bad hypertension. Got on blood pressure meds, which almost immediately got me immediately under control, and on a low dose of a statin. Last LDL was excellent. I do have some family history of coronary artery disease so I took this seriously, as I’m now in my 50s. As Bill Burr says, these are our “Drop Dead Years” for us men. It happens, usually in guys that abuse their bodies, but also in apparently healthy guys.
No side effects at all from the meds. Hopefully your family doc can sit down with you like mine did, look at your numbers and risk factors and give you an estimate of the potential benefit of going on meds. There are no guarantees either way, it’s about improving the odds.