About

Dr. Ryan Kasky, DO

Family physician. Author of Your A1c by the Numbers.

Dr. Kasky takes care of people with type 2 diabetes and prediabetes, and he has had the “does this video actually work?” talk more times than he can count.

He wrote this series because a 15-minute office visit is rarely enough time for these questions. People want to know what they can do with their own hands, feet and fork, which supplements are worth the money, and the truth about what they see online.

*And no, he doesn’t sell supplements. When the book says something works, it’s because the studies say so. When it calls something a waste of money, nobody is paying him to say it.

How the books are made

Each book asks three questions of every claim: does it work, how much, and is it safe? The answers come from published research, mostly reviews that pool many trials, with the source for every number in the notes. Patient stories are composites, never real, identifiable people.