That is awesome, congratulations on a remarkable turnaround!
Funnily, I'm kind of the opposite story -- mid-40s and fairly athletic. I run around 14 miles every other day at sub 7 pace, play other sports, and am generally in good shape and have been my whole life. My diet is mostly vegetarian without much alcohol. Trying to do everything right to live a healthy lifestyle, but my cholesterol was terrible... LDL around 240.
My doctor chalked it up to bad luck with genes. After a few months on a statin it was at 90. Since I didn't have much room to change lifestyle, I'm very thankful for drugs!