I did chelation for about 15 years right up until I had quadruple bypass. Bypass was inevitable for me but I do believe chelation postponed the bypass for many years though.
I took 30 treatments but was not diagnosed with any heart trouble other than tachycardia and high blood pressure. My blood pressure is fine now and I haven't had a tachycardia attack in months. I'm 68 now.
Talking to other patients, you will hear all kinds of miracles with other people. Stories of diabetic feet that were saved from amputation as close as a week from the surgery. A man whose family were all dead before 50 with heart disease had his attack at 38 and started the treatments and has no blockages now. He's swore to take the treatments forever. A Lyme disease patient was wheelchair bound and couldn't speak anymore I saw myself get out of her chair and speaks again. 80-90% are treated for heart troubles, but it seems to help all sorts of maladies.
If you read the stuff that calls it "quackery" you can spend your life dying in pain or you can get fixed. It's your choice.
Is chelation expensive? I don’t think my plan covers it. But I worked with metals and volatile chemicals for 20+ years.