Boston Functional Nutrition is a place for women who are seeking supportive, individualized care for their wellness and nutritional concerns. Led by a registered dietitian, Boston Functional Nutrition was born out of a desire to support the unique health needs of women by marrying holistic mind-body medicine with evidence-based nutrition therapy, with a focus on recovering hormonal balance.


Balanced, vibrant health is possible!


Ayla Barmmer, MS, RD, LDN:

Practice Owner, Clinical Director

Ayla Barmmer is a Registered Dietitian Nutritionist, functional medicine practitioner, and the owner and operator of Boston Functional Nutrition, an integrative and functional nutrition practice based in Concord, MA that also serves people globally via virtual services. Her practice is known for its “big picture” approach, which starts with a thorough whole-person assessment and uses cutting-edge research to help individuals create effective, meaningful change even in the most complex of cases. Ayla’s primary specialty is women’s health with a special emphasis on hormone balance, infertility, and digestive wellness. She believes that often simple, personalized diet and lifestyle interventions can help women find the energy, balance, and joy in their lives.

Ayla obtained her undergraduate degree in dietetics and completed her dietetic internship at the University of Connecticut, and earned a Master of Science in Health Communications from Boston University. She has additional training in clinical nutrition, functional medicine, women’s health, herbal medicine, and holistic and integrative therapies. Her dynamic combination of professional, personal, and educational experiences allows her to effectively meet women where they are, and help them reach their ultimate health goals with ease.

Ayla is also a highly sought-after speaker and educator on topics such as nutrition for fertility, pregnancy, immune health, and gastrointestinal issues. Her expertise has been recognized by Boston Magazine, Tufts Medical Center, Shape, Women’s Health Magazine, and EatingWell.

She is the founder and CEO of FullWell and Co-founder of the Women’s Health Nutrition Academy in collaboration with Lily Nichols, RDN, CDE. The Women’s Health Nutrition Academy brings virtual, cutting-edge women’s health continuing education opportunities to health professionals.

On the personal side, Ayla is a mom to her 5 year old son and 2 year old daughter and enjoys biking and hiking with her family throughout New England.

Interested in learning more about Boston Functional Nutrition’s services?

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Stephanie Bott

Wellness Manager

Stephanie is Boston Functional Nutrition's wellness manager, working closely with all clients to support their success and facilitate a positive experience working with the practice through health coaching and coordinating program services.

Stephanie has extensive experience building relationships and providing support to individuals in retail, small business, and non-profit organizations. She has developed customer experience programs and is passionate about providing the best client experience possible.

A recent transplant to the Boston area from South Florida, Stephanie worked for twelve years in non profit botanic gardens in Miami where she had a particular focus on developing training and educational programming for volunteers and visitors of all ages.  This work also fostered in Stephanie a great connection to the natural world and a better understanding of issues related to food and sustainability.

Stephanie has an undergraduate degree in French from Georgetown University in Washington, D.C. and a Master of Science degree in Mental Health Counseling from Georgia State University in Atlanta. Stephanie has also had personal experience working with a functional nutritionist for over a decade and can attest to the tremendous positive difference in health that can be achieved with this holistic approach to wellness which takes into account an individual’s particular needs. In her free time, Stephanie enjoys exploring her new city of Boston and loves taking long walks and even longer road trips with her husband and their dog Maia.

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Emily Kozarsky, MS, CNS, LDN

Functional Nutritionist

Emily is a functional nutritionist, Certified Nutrition Specialist (CNS), and Licensed Dietitian Nutritionist (LDN) in the state of Massachusetts.
Emily is passionate about women's health, particularly hormone balance, gut health, preconception, pregnancy, and postpartum. Emily focuses on intuitive and mindful eating in practice and finds joy in helping clients form healthier relationships with food and eating. Instead of concentrating on an isolated set of symptoms, Emily has a whole-person approach to her nutrition counseling. Emily truly believes in using food as medicine to help clients achieve optimal health. She also loves to empower clients to incorporate more things in their lives that bring joy; whether that be movement, mindfulness exercises, or other forms of self-care. Emily received her bachelor's of science from the University of Delaware and her master's of science in nutrition and integrative health from Maryland University of Integrative Health. On a personal note, Emily is married and has two young children. In her free time, you will find her exploring different parks with her family, cooking and baking in the kitchen, taking ballet barre classes, reading, and going for walks.

Ana Cristina (Jurczyk) Lewis, MS, RD, IFMNT

Functional Nutritionist

Ana Cristina Jurczyk is a Registered Dietitian Nutritionist and functional medicine practitioner. With a holistic approach, she accounts for and evaluates all aspects of health, while tailoring individualized nutrition and lifestyle plans for each person. Everyone has unique needs and Ana makes sure interventions are realistic and applicable, regardless of how simple or complex the case. Ana's primary specialties include women's health, food sensitivities, and digestive wellness. Both personal and professional experience drives her passion to always help improve the health and life of each client.

Ana has an undergraduate degree in nutritional sciences from the University of Connecticut. She completed her master's degree in nutritional sciences and dietetic internship at California State University Long Beach. Ana has received additional training from Susan Allen's Next Level Functional Nutrition, Angela Grassi's PCOS Nutrition Center, and a variety of other programs. She currently has a food sensitivity certification (CLT), integrative and functional medical nutrition therapy certification (IFMNT), and has completed her 200-hour Registered Yoga Teacher training.
In her free time, you can find Ana traveling and exploring with her husband, taking care of her many plants, reading a book, or getting active outside (especially at the beach). Originally from Massachusetts, Ana is excited to join a nutrition practice based in her home state.
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Talitha Ellsworth, MPH, RD, LDN

Functional Nutritionist

Talitha Ellsworth is a Registered Dietitian Nutritionist and functional medicine practitioner with a passion for utilizing mind-body modalities to optimize health and wellness. Talitha’s holistic health philosophy has culminated from her personal life experiences, education and professional work, acknowledging that all systems, mind and body, work together to create our well-being. Talitha’s primary specialties include food sensitivities, digestive wellness and women's health and she finds great joy and purpose in helping women navigate their own unique healing journey.

Talitha earned an undergraduate degree in Psychology from the University of Washington and a Masters Degree in Public Health from Loma Linda University where she also completed her dietetic internship. She has received additional training from Bastyr University, Susan Allen’s Next Level Functional Nutrition Training, and Leslie Korn’s Nutritional and Integrative Medicine for Mental Health Professionals Certification. Talitha is a Certified LEAP Therapist (CLT) for food sensitivities and a 500-hour Registered Yoga Teacher.

Talitha lives with her husband and 3 kids in Apex, NC. When Talitha is not delving into the latest nutrition research or practicing on her yoga mat, you will find her hiking or biking a nearby trail with her family, having a kitchen dance party, or outside working in the yard.


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Jamie Basak, RD, LD, RDH

Functional Nutritionist

Jamie is is a Registered Dietitian Nutritionist and functional medicine practitioner Her passion is helping women restore hormone health through personalized nutrition and lifestyle programs. Jamie focuses on using the “food as medicine” approach and takes pride in the personalized nutrition services that she provides.

Jamie earned her bachelor’s degree in Dietetics from Keiser University in Lakeland, FL. She has completed additional advanced training and certifications in functional nutrition and holistic health.

Jamie knows firsthand how it feels to struggle with infertility, miscarriage, and irregular, painful cycles. Jamie's own struggles with her own hormones and fertility are what led her to her path of helping women worldwide balance their hormones, restore fertility naturally and bring balance to both their cycles and their lives!

In her free time, Jamie enjoys family time with her husband, kids, and two dogs as well as running local races.