Le site Demandez aux scientifiques a été créé en vue d’aider les gens à comprendre et maîtriser le fondement scientifique des produits USANA de qualité supérieure. L’entreprise a toujours concentré ses efforts sur la création de produits nutritionnels de premier ordre, fondés sur un concept tout simple : si vous nourrissez vos cellules en fonction de leurs besoins précis, votre santé en ressentira les bienfaits. Tel est le concept qui a constamment inspiré USANA dans ses efforts inlassables pour innover et faire progresser la science de la nutrition cellulaire – mettant ainsi à la portée de tous une vie sous le signe de la santé et du bonheur.

En plus de mettre au point certains des meilleurs suppléments de santé au monde, USANA informe aussi le public sur le corps humain, la santé et les effets que peuvent avoir ses produits sur l’organisme. Vous trouverez cette information ici sur le site askthescientists.com/fr. On y traite des sujets les plus divers, à partir des réponses aux questions sur les produits USANA jusqu’aux conseils sur la façon dont vous pouvez prendre en main votre santé.

L’équipe Recherche et développement et Demandez aux scientifiques d’USANA


Rob Sinnott, PhD

Directeur général des Affaires scientifiques

Dr. Maddela has more than 38 years of experience in the field of public health which incorporates 16 years in the global dietary supplement industry. He taught at academic institutions, and worked with non-governmental organizations. He designed, implemented and evaluated many successful public health programs in the Southeast Asia Pacific region funded by prestigious international agencies.  Dr. Maddela has Public Health and Medicine Degrees. He has Master of Public Health with from the School of Public and Community Medicine, Hebrew University in Israel. He attended clinical trial course at the Bloomberg School of Public Health, Johns Hopkins University, and completed the Executive Leadership Program from the University of Oxford.  Dr. Maddela managed clinical studies with academic and research organizations to uphold USANA’s reputation as a science-based company. He also leads science education to ensure compliant, positive message and provide an exceptional customer experience for USANA global customers.

Rolando L. Maddela, MPH, MD, CCRP

Directeur exécutif, Information sur la santé et Recherche sur la nutrition à l’échelle mondiale

Russ Barton, MS, CNS, CISSN

Scientifique principal en nutrition

Austin Winegar

Directeur principal, Demandez aux scientifiques

Kenny Tan

Directeur, Information sur la santé et la science

David Baker

Directeur principal de la rédaction

Dr. Brewer joined USANA in 2016 as a senior scientist, with a background in molecular biology and nutrition. She completed her bachelor’s degree in biological sciences at the University of Alaska Anchorage and her PhD at the University of Alabama at Birmingham. Her dissertation work investigated impacts of diet and nutrition on aging and longevity.  Dr. Brewer’s interest in improving health through science led her to USANA. Since joining USANA, she has focused on all stages of product development, particularly products centered on the human microbiome—including research, design, and evaluation. She led the launch of the USANA Oral Probiotic, gives trainings and presentations internally and externally to associates, and guides new product development.

Rachel Brewer, PhD

Directeur, Recherche de nouveaux produits

Jeremy Tian, PhD, MD

Directeur, Recherche de nouveaux produits

Keijun has been showing her leadership in the development of supplement, food, and personal care products for almost 25 years. She holds a degree in pharmacology from Showa Pharmaceutical University in Japan, and she is a licensed pharmacist. She is also a cosmetic formulation chemist certified by the Institute of Personal Care Science in Australia. She is also member of the New York Society of Cosmetic Chemist and the American Oil Chemists’ Society.  Keijun leads USANA’s skincare product development, collaborating with the leading skincare manufacturing company in Japan, and successfully launched the Celavive skincare line globally in 2018. Keijun continues developing skincare products, working closely with USANA’s marketing department to meet more personalized and market-driven product needs.

Keijun Koh

Directrice, Développement de produits

Mark Levy, PhD

Directeur, Validation de produits

Katie Burton

Directrice principale, Développement de produits