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Luigi Gratton

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

Susan Bowerman-image

Susan Bowerman

M.S., R.D., CSSD, CSOWM, FAND – Senior Director, Worldwide Nutrition Education and Training
Chair, Herbalife Dietetic Advisory Board and Outer Nutrition Advisory Board

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Luigi Gratton-image

Luigi Gratton

M.D., MPH – Vice President, Office of Health and Wellness
Chair, Herbalife Nutrition Advisory Board

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David Heber-image

David Heber

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

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John Heiss-image

John Heiss

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

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Rocio Medina Badiano-image

Rocio Medina Badiano

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

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Dana Ryan-image

Dana Ryan

Ph.D., M.A., MBA – Director, Sports Performance, Nutrition and Education

Chair of the Fitness Advisory Board

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Gary Small-image

Gary Small

M.D. – Member, Nutrition Advisory Board

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