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Our experts

Our doctors, trainers, dietitians and advisory board members include internationally recognized experts and key opinion leaders. With specializations in nutrition, fitness and public health, they guide research that drives product innovation. They help educate and train our Herbalife Independent Distributors who then guide and support their customers to achieve their goals and live their best lives.

Global experts

Kent Bradley-image
Kent Bradley

M.D., MBA, MPH – Chief Health and Nutrition Officer

Kristy Appelhans-image
Kristy Appelhans

NMD, MSRA – Vice President, Global Consumer Safety

Susan Bowerman-image
Susan Bowerman

M.S., R.D., CSSD, CSOWM, FAND – Senior Director, Worldwide Nutrition Education and Training

Vice Chair, Herbalife Dietetic Advisory Board

Laura Chacon-Garbato-image
Laura Chacon-Garbato

LME – Director, Worldwide Nutrition Education and Training

Chairwoman, Herbalife Outer Nutrition Advisory Board

Samantha Clayton-image
Samantha Clayton

OLY, ISSA-CPT – Vice President, Sports Performance and Fitness Education

Vice Chair, Herbalife Fitness Advisory Board

Luigi Gratton-image
Luigi Gratton

M.D., MPH – Vice President, Training

Chairman, Herbalife Nutrition Advisory Board

David Heber-image
David Heber

M.D., Ph.D., FACP, FASN – Chairman, Herbalife Nutrition Institute

John Heiss-image
John Heiss

Ph.D. – Vice President, Product Innovation Member
Herbalife Nutrition Advisory Board


Rocio Medina Badiano-image
Rocio Medina Badiano

M.D. – Cochairperson and Member, Herbalife Nutrition Advisory Board

Michelle Ricker-image
Michelle Ricker

RDN – Director, Worldwide Health Education and Training

Chair, Herbalife Dietetic Advisory Board

Dana Ryan-image
Dana Ryan

Ph.D., MA, MBA – Director, Sports Performance, Nutrition and Education Chair, Herbalife Fitness Advisory Board​

Gary Small-image
Gary Small

M.D. – Member, Herbalife Nutrition Advisory Board