I tracked this back to the source. Here is the actual clinical trial:
https://www.clinicaltrials.gov/ct2/...03285737&rank=1

Please note:
Sponsor:McMaster University
Collaborator:National Dairy Council
Information provided by (Responsible Party):McMaster University

For those interested in How We Age. (the science)
https://www.the-scientist.com/features/how-we-age-35872

This article also addresses the idea of quantity or quality of life. As one of the "elderly" I can speak to the subject. Because of my ongoing good health, I can expect to live at least another 20 years. But do I want to? The part of me which thinks is curious. I'd like to watch the unfolding of what the future holds in technical advances. Maybe one of those clinical studies will give the answer to the breaking down of DNA sequences which cause the errors which bring about aging.

It's too late for me not to age LOL, but I'm more interested in the quality of my life. It's up to me, and I believe that ketogenesis is the best way to stave off disease and exercise is the best way to my personal enjoyment of life.