About JJFN
At Jenna Johnston Functional Nutrition, we’re here to support you through every stage of your health journey, from the childbearing years and beyond. We know how frustrating it can be to feel dismissed or told your symptoms are “just normal” or “in your head”.
Our mission is to help you feel vibrant, confident, and truly in control of your health by addressing the root causes of your concerns. Whether you’re struggling with weight gain, low energy, digestive issues, or hormonal imbalances, we focus on sustainable weight loss, restoring gut health, and boosting energy levels. Together, we’ll create a personalized plan to help you feel your best and live life fully.
Jenna Johnston, MS, CNS, LDN: Founder and Clinical Director
Jenna Johnston is a Certified Nutrition Specialist® and Clinical Herbalist with a passion for helping women achieve balanced, vibrant health. Jenna’s journey into health, nutrition, and herbal medicine began at the age of 18, driven by her own struggles with depression, anxiety, weight gain, and hormonal imbalances. Her personal experience has fueled her dedication to finding natural solutions for mental and physical health.
Jenna’s professional journey includes a comprehensive education in clinical herbalism at the CommonWealth Holistic Herbalism Center, where she completed a three-year apprenticeship program. She furthered her expertise by obtaining a Master’s in Clinical Nutrition from Sonoran University of Health Sciences. and completed the requirements to become a Certified Nutrition Specialist® (i.e., 1,000 supervised hours and pass the CNS® board exam). Jenna is also a Licensed Dietician Nutritionist (LDN) in Massachusetts.
Jenna combines her knowledge of herbal medicine and functional nutrition to create customized health plans tailored to each client’s unique needs.
Our Philosophy
We believe that everyone deserves to experience what it feels like to be truly healthy. By taking care of our health, we can enjoy life to the fullest and spend quality time with our loved ones. Jenna, along with her husband, 9-year-old son, and 6-year-old daughter, love spending time as a family playing outside and swimming. This personal passion for family time underscores Jenna’s commitment to helping you achieve the health and vitality you deserve so that you can live a vibrant life and enjoy your time getting out and doing the things you love with the people you love.
If you’re ready to take control of your health and experience the benefits of a personalized nutrition plan, we invite you to learn more about our services and how we can help you feel your best.
Interested in working with Jenna?
Schedule a free 15-minute discovery call to learn more about our programs and services