The Downingtown Nutrition Family


Our Team of Nutrition Experts
The team at Downingtown Nutrition is a group of highly skilled and diverse professionals dedicated to providing personalized nutrition and wellness services. Led by Jennifer Barr, the founder and owner, who is a Certified Diabetes Care & Education Specialist and Registered Dietitian, the staff collectively specializes in a wide range of areas including women’s health, diabetes management, weight management, sports nutrition, intuitive and mindful eating, and more. Together, the team emphasizes a holistic, individualized approach to nutrition that blends science, personal experience, and mindfulness. Their work extends to managing chronic conditions, supporting lifestyle changes, and helping individuals achieve optimal health through a balanced and sustainable approach.
Emily Keeley, MS, RDN, LDN
Registered Dietitian NutritionistFocus: Weight Management, Thyroid, Diabetes and Menopause Specialties
Emily Keely is a Registered Dietitian who combines clinical precision with a deeply compassionate, patient-centered philosophy. An alumna of West Chester University with a degree in Nutrition and Dietetics, Emily has her Master of Science in Human Nutrition and Functional Medicine at the University of Western States. This advanced training allows her to bridge the gap between traditional nutrition and functional applications for complex metabolic concerns.
Having previously served as a dietetic intern within the Downingtown Nutrition network, Emily has a foundational expertise in weight management, diabetes, women's health and GLP-1 drugs.. She now specializes in hormone health, including menopause and thyroid disease, as well as diabetes and weight management. Emily is known for her gentle approach, ensuring that every client feels heard and supported as they navigate their unique path toward hormonal balance and long-term wellness.
Jennifer Barr, MPH, CDCES, RDN, LDN
Owner/Registered Dietitian NutritionistFocus: Diabetes, Women’s Health, & Weight Management Expert
Jennifer is the Founder of Downingtown Nutrition, starting the company in 2008, motivated to help improve the health of the community where her and her family lives. Jennifer has always believed health is a right and it should cost you an arm and a leg to seek quality nutrition expertise.
She has worked in multiple disciplines in nutrition including maternal child health, women's health, weight management, diabetes care, population health and community health. With over 23 years of experience, Jennifer is committed to improving the health of the community using a holistic approach. She specializes in weight management, sports nutrition, health disparities, women’s health and diabetes. Her work in community nutrition and weight management has earned her esteemed honors at the federal and state levels, leading to numerous grants that have allowed her to conduct important work in the public health sector.
Jennifer's professional accomplishments include Certified Diabetes Educator, past Delegate for the Diabetes and Education Dietetic Practice Group, Member Academy of Nutrition & Dietetics, Past President, Delaware Dietetic Association, Young Dietitian of the Year, Outstanding Dietitian of the Year, Pediatric and Adolescent Weight Management Certification and Adjunct Instructor, West Chester University.
While she’s earned federal honors and state grants for her work in public health, she’s just as likely to be found on the sidelines of a local practice. As a busy mom, she knows that "holistic health" has to work in the real world (and between carpools). Whether she’s teaching at West Chester University, cooking with kids at an after school program or helping a client hit a personal best, Jen is on a mission to make Downingtown the healthiest—and happiest—place to live.
Marie Carol, CPT
Certified Fitness Trainer and Office ManagerFocus: Fitness Training
Marie is our Certified Fitness Trainer and Office Manager at Downingtown Nutrition. She has worked in various office settings over the years. Marie started her personal training career in 2014 after obtaining her certification with the American Council of Exercise (ACE). Her love of helping others achieve their fitness goals started with simply learnin g to help herself. Being diagnosed with type II diabetes as a teenager forced Marie to learn how to eat and exercise in order to maintain her sugar levels. In 2016, she trained for and completed her first Ballpark Spartan Obstacle Race. Marie understands the importance of setting a goal, seeing what it will take to obtain that goal, and working towards tackling it. She enjoys teaching clients new ways of exercising using the TRX suspension straps, kettle bells, and full body weight exercises. Marie believes in training for function, obtaining goals, and developing a healthy lifestyle.
She enjoys traveling, all things Disney, being at the beach, kayaking and fishing.
Matt Jones, RDN, LDN
Registered Dietitian NutritionistFocus: Sports Nutrition and Men’s Health Specialties
Matt is a Registered Dietitian specializing in Performance Nutrition for athletes and he also focuses on Men’s Health. He offers nutrition consultations to both fitness exercisers and competitive athletes, coaching them on strategies to fuel the body with whole foods and embrace health and wellness as a lifestyle! Matt teaches athletes how to balance nutrition, exercise, stress, and rest to optimize performance and achieve results, based on individualized goals and needs. He wants his athletes to enjoy favorites while still reaching goals and maintaining balance. As a father, a current high school soccer coach for the past 9 years, he has personal experience applying evidence-based fueling strategies in simple and practical ways.
Matt has over 15 years of clinical-acute healthcare experience and is also passionate about helping his clients improve health related to chronic conditions such as prediabetes, diabetes, high blood pressure, high cholesterol, heart disease, weight management and chronic inflammation.
Matt’s education includes Dietetic Internship, University of Delaware B.S., Nutrition & Dietetics, West Chester University, ; and a Nationally Certified Personal Trainer (ISSA). Matt is currently studying to become a Board-Certified Specialist in Sports Dietetics.
Whether you are looking for individual nutrition coaching for yourself or your family member or you are in search of team/organization performance nutrition consultation services, you have come to the right place. He looks forward to learning all about you and your goals!
Leslie Kubera, MA, RDN, LDN
Registered Dietitian NutritionistFocus: Gastrointestinal Health and Eating Disorder Specialties
Leslie Kubera is a highly credentialed Registered Dietitian specializing in gastrointestinal health and eating disorder recovery. She earned her Bachelor of Science in Nutrition Science from Pennsylvania State University and a Master of Science in Nutrition Education from Immaculata University. Leslie completed her clinical training through a rigorous Nutrition Therapy Internship at the Hospital of the University of Pennsylvania.
With dual certifications in both Adult and Adolescent/Childhood Weight Management, Leslie brings a comprehensive, evidence-based approach to patient care. She currently serves as the Lead Registered Dietitian for the Adult and Adolescent Intensive Outpatient Programs (IOP) at Buttonwood in Downingtown, PA. In addition to her clinical practice, Leslie is a dedicated educator, serving as an adjunct faculty member at Immaculata University where she instructs both undergraduate and graduate students in Nutrition Science.
Leslie is the gut detective, helping our patients find answers! Both in person and virtual appointments are available.