What can be done to reduce the CAC score in a 38-year-old athlete?

Hi doctor,

I am a 38-year-old male, very fit (competitive athlete) with a height of 6'0" feet and a weight of around 185 lbs. Out of curiosity, I got a coronary calcium score 18 months ago. Surprisingly it came back with a score of 25. I have no family history of heart disease. Assumed it was diet related, so beginning 18 months ago, I went plant-based. My cholesterol levels have always been low (total below 130). The latest results are similar to my regular results (total 128 mg/dL, LDL 55 mg/dL, HDL 58 mg/dL, triglycerides 77 mg/dL). I just got an updated CAC score and assumed it would have stayed at 25 or gone down after being plant-based. Instead, it came back at 65. That is an increase of almost 300 % in 18 months. I do not know what else to do and do not want to start getting on statins for the rest of my life. What is causing this to go up, and what can I do about lifestyle changes to make it stop going up? I do not have any symptoms (no chest pain, etc.), but my calcium score keeps increasing. A few years ago, the first calcium test score returned 25. Since then have been plant-based but the score keeps going up. I am currently taking Finasteride and Testosterone. Please help.