Dr. Leaf is a chi­ro­prac­tor and has been in prac­tice for over 35 years. He has served as the pres­i­dent of the Inter­na­tional Col­lege Applied Kine­si­ol­ogy (ICAK) and has lec­tured in United States, Canada, Europe, Aus­tralia on the appli­ca­tion of mus­cle test­ing for dif­fer­ent disorders.

He has treated Olympic ath­letes, world cham­pi­ons and pro­fes­sional play­ers in the NFL, NBA and NHL and was on the med­ical staff of A.C. Milan of the Ital­ian soc­cer league. He is one of the best inte­grated prac­ti­tion­ers and mus­cle testers in the US uti­liz­ing a highly inno­v­a­tive treat­ment com­bi­na­tion con­sist­ing of struc­tural and chem­i­cal pro­to­cols to fix com­pli­cated disorders.

As a sought after prac­ti­tioner and lec­turer, Dr Leaf has amassed an incred­i­ble wealth of infor­ma­tion and resources through his prac­tice and on-going research. He’s the author of Applied Kinesiology Flowchart Manual that has reached the fourth edi­tion.