I have genetically high cholesterol and tried the Paleo diet for a year. I felt pretty good and lost some weight—probably from eliminating pastries—but at the end of the year my cholesterol was still 230. I tried statins but I'm one of the small percentage of people who doesn't tolerate them well.
From a tip on Slowtwitch, the triathlon forum, I got deep in the books and research about plant-based diets where the fiber is left in tact. So brown rice, not white, apples, not apple juice, veggies, beans... It only took 2 weeks to get my cholesterol to 170. I lost more weight, recovered from workouts better, and felt better. Shocking, yes, but it turns out it was well known by food researchers, just not me.
Three doctors I know, my wife, and perhaps a dozen of our friends watched the transformation and followed suit. One of the docs, my personal physician Dr. Souvignier, who once packed some pounds, now teaches a 6-workshop series at Sutter Health about it. He looks physically transformed. One of our friends had severe Type II diabetes and was on the keto diet for years in an attempt to control her blood sugar. She tried going all whole plants and was off her insulin within about 30 days. She even wrote .a paper about it in a diabetes academic journal. Turns out her story isn't very unique.
Here's a great short video on foods that really do enhance athletic performance and recovery: https://nutritionfacts.org/video/foods-to-improve-athletic-performance-and-recovery/