Lead Science Team

Dr. Russell Osguthorpe, MD

CMO, (Chief Medical Officer)

Dr. Russell Osguthorpe currently serves as chief medical officer at doTERRA. He’s establishing a network of primary care clinics focused on wellness and prevention through integrative, evidence-based medical practices. He’s also researching the use of essential oils in healthcare settings.

Dr. Osguthorpe received his medical degree from the McGill University School of Medicine, completed his residency at the Children’s Hospital in Denver, Colorado, and pediatric infectious diseases fellowship at Washington University School of Medicine.

Nicole Stevens, PhD, MS, MPH

Vice President of Clinical Research

Nicole has conducted essential oil research for over 25 years. She’s worked in quality control laboratories in the nutraceutical industry and academic research laboratories at the University of Utah and the University of Nevada, Las Vegas (UNLV) Cancer Research Institute. Alongside her research, she’s taught courses in chemistry and biochemistry at Brigham Young University–Idaho and UNLV.

Nicole has been researching doTERRA essential oils since the company was formed in 2008. Currently, she’s the vice president of clinical research. Her primary research revolves around essential oil biochemistry related to human application, among other topics actively being pursued by the clinical research team. Nicole’s research has provided novel evidence of essential oil metabolic, proteomic, and epigenetic mechanisms.

Nichole earned a Bachelor of Arts degree in technical writing and a Master of Science in botany—both from Brigham Young University—and a second master of science in public health from Purdue University. She completed her doctorate in biochemistry and molecular biology from the University of Miami Miller School of Medicine, investigating essential oil metabolomics and mechanisms of action.

Nicole holds a certified principal investigator (CPI) accreditation with the Association of Clinical Research Professionals and a certified clinical research professional (CCRP) endorsement with the Society of Clinical Research Associates. She’s also a certified phlebotomy technician (CPT) with IV specialization, a certified clinical medical assistant (CCMA), and a certified electrocardiography technician (CET).

Dr. Prabodh Satyal, PhD

Head of Essential Oil Science

Dr. Prabodh Satyal of Nepal is the head of essential oil science at doTERRA. He’s studied the chemical compositions of more than 50,000 essential oils from various parts of the world, published more than 100 research articles in peer-reviewed journals, and served as an essential oil expert for nearly 17 years. He’s also been invited to several renowned conferences as a guest speaker.

Dr. Satyal has a special interest in essential oil adulteration detection using marker-based and chemometric analyses, creating the only known mass spectral library of synthetic markers. He’s currently developing the first fully automated adulteration analysis software for GCMS, which will identify the purity percentage, origin, and mixed sources in essential oils. Dr. Satyal is passionate about collaborating with academics, medical professionals, and growers to improve the standard of essential oil research and applications globally.

Dr. Satyal earned his master’s and doctorate degrees in essential oil research from the University of Alabama in Huntsville.

Aaron Sorenson, MS

Vice President of Quality

Aaron Sorenson is pursuing a PhD in biochemistry and molecular biology from the University of Miami. He received undergraduate degrees in chemistry and material engineering from the University of Utah and a master’s of science degree from Colorado Technical University.

Cécile Bascoul, MS, PhD

Director of Product Safety

Dr. Cécile Bascoul has over 15 years of experience in clinical and preclinical research; academic quality and toxicology; and the pharmaceutical, cosmetic, and nutraceutical industries.

Prior to joining doTERRA, Cécile managed preclinical studies and early-stage clinical trials for new topical analgesics at a small pharmaceutical company in Houston, Texas. Her past work also includes various research positions at Pierre Fabre Dermocosmétique, Laboratoires Boiron, and CNRS in France, along with AstraZeneca, Obsidian Research, and Q-Chip in the UK.

Cécile grew up in France and received her master’s degree in biotechnology from Ecole Supérieure d’Ingénieurs de Luminy. During her PhD and postdoctoral work at the UK School of Biosciences at Cardiff University, Cécile studied the effects of targeted dietary supplements on degenerative diseases.

As director of product safety at doTERRA, Cécile’s research is focused on essential oil safety and toxicology, specific constituents, potential contaminants, and natural complex substance ingredients for cosmetic and nutritional use. Cécile establishes long-term relationships with research groups and institutions, focusing on these safety and toxicology interests. She enjoys mentoring junior scientists, helping others achieve their life goals, and working with bright, diverse, and dedicated teams. She’s passionate about lifelong learning, continuous improvement, and delivering high-quality, safe products for customers.

Cécile loves flowers and believes strongly in giving back. As such, she volunteers as a wildflower guide and for other events.

Alex DaBell l, PhD(c), MS

Vice President of Global Nutraceuticals and Innovation

For nearly two decades, Alex has been at the forefront of designing and developing premium nutritional products, collaborating with experts globally to set new standards in the industry. His passion for nutrition drives him to constantly explore new discoveries and integrate them into innovative products.

Alex holds a Master of Science in physiology and developmental biology, as well as a Bachelor of Science in biology—both from Brigham Young University. He’s currently completing his doctorate in biochemistry and molecular biology at the University of Miami Miller School of Medicine. His research focuses on metabolic regulation, biochemistry, nutritional epigenetics, and health benefits of essential oil chemistry.

Known for his creativity and innovative approach, Alex continually seeks novel solutions to advance the field of nutraceuticals. And he remains a dedicated advocate for natural product solutions. He likes engaging with like-minded individuals worldwide, sharing his knowledge and enthusiasm for health and wellness products.

Outside of their professional pursuits, Alex, his wife Lisa, and their four children enjoy going on outdoor adventures, playing board games, and practicing the violin and piano. They also love exploring new cuisines.

Brittany L. Graf, PhD

Managing Scientist of Essential Oil Development

Dr. Brittany L. Graf received her PhD in plant natural products in 2014 from Rutgers University, New Jersey. As the associate director of training for the Global Institute for BioExploration and a Fulbright Fellow, she partnered with universities, nonprofits, and local communities for eight years, exploring the antimicrobial and antioxidant activities of over 350 traditionally used medicinal plants in Bhutan, Chile, Cuba, Ecuador, Kenya, Namibia, and the US.

Over the past five years in the personal care and supplements industries, Dr. Graf’s research has focused on agricultural and extraction technologies that enrich bioactive content in natural products and promote environmental sustainability. Her mission at doTERRA is to leverage the amazing Co-Impact Sourcing® framework to develop essential oil–based products that benefit humanity, while also improving the wellness of the planet and agricultural communities. She’s passionate about building team leadership, collaboration, and lasting positive changes on the local level and global scale.

Scott A. Johnson, ND

Director of Research Substantiation

One of the most prolific natural medicine writers of the twenty-first century, Scott A. Johnson has empowered tens of thousands of people to realize greater natural wellness across more than a dozen books and over 300 articles in online and print publications.

His research focuses on medicinal essential oils and their clinical application for the leading ailments afflicting modern society. He’s one of the world’s leading experts on essential oils and supercritical essential oils. Scott pioneered evidence-based essential oil therapy, which combines ancient healing practices with modern science to maximize their benefits. Another research focus for him is the safe use of essential oils, and he’s published internationally on the subject.

His diverse educational background and work experience allow him to present complex health topics to any audience. He’s an acclaimed speaker and has delivered keynote presentations across North America, Europe, and Asia. He travels the globe, carrying his passion for people and natural medicine.

Eva DeMarchi

Perfumer

Eva DeMarchi joined doTERRA as a perfumer in January 2022. She has over 20 years of experience in perfumery formulation and evaluation, developing exceptional olfaction skills over that time.

She received an Advanced Perfumery certification from Pratt Institute and is excited to bring her expertise to the doTERRA Research and Development team, assisting in the creation of new essential oil formulas and products.

Thao Le, BS

Managing Scientist, Personal Care and Household Products

Thao has demonstrated her love of science over two decades of working on personal care and household products. Prior to joining doTERRA, she’s helped create world-class products for Arbonne^®, Nu Skin^®, Neways^®, Dr. Perricone, Pfizer, ProCyte, Pharmacia & Upjohn, and many more at Sorenco Laboratories.

Her key insights into cosmetic formulations started with her analytical chemist experience at Weider Global Nutrition, where she worked for eight years. She’s passionate about making the best products using the safest, most innovative ingredients. The satisfaction of consumers and Wellness Advocates after trying her products drives her to make more great products.

Thao earned a bachelor’s degree in chemistry from the University of Utah.

Noura Ahmed, PhD

Director of Scientific Affairs

Dr. Noura Ahmed is a member of the Essential Oil Science team and director of scientific affairs for doTERRA. Her focus is on natural product drug discovery (medicinal chemistry).

She received her bachelor’s of science degree with honors in biological sciences (botany) and master’s degree in phytochemistry, both from Suez Canal University, Egypt. In 2015, Dr. Ahmed was awarded a PhD in biotechnology science and engineering from the University of Alabama in Huntsville. She was a postdoctoral research fellow at the Department of Pharmacology in the Vanderbilt University School of Medicine.

Dr. Ahmed’s research is focused on natural products drug discovery, essential oils, and chemical ecology. She’s published over 70 research articles in peer-reviewed journals on the composition and bioactivity of essential oils from wild plants, drug discovery from nonvolatile plant components, drug discovery using nanotechnology, and lipid analysis using LC-MS/MS. She’s currently working on establishing a network of long-term collaborations and strategic partnerships with academia, the healthcare sector, and other research institutions to build a comprehensive biological activity database for doTERRA single essential oils and proprietary blends.