About Us

Lifestyle • Education • Empowerment • Diet • Supplementation

These are the five pillars that make up Nutrition Dynamic.

We are an all-encompassing unit utilizing functional medicine practices to instill Nutrition and Lifestyle Change to help you reach your potential. Utilizing a team of highly skilled Health Coaches, Dieticians, Medical Doctors and Personal Trainers the possibilities are endless when it comes being able to support our clients on their journey to take control of their lives again.

We not only take your symptoms into account but we also take you as an individual into account. We want to know what your daily life is, who you have around, where you are and what you think about. All of this plays a factor into how you uniquely need to navigate your own health and fitness journey.

By taking all of these factors into account we can get to the true root cause of is affecting you. Only addressing the symptoms without addressing the root cause while may work for a period of time will eventually fail you. This is why we dig deep and address the true cause of what is holding you back from reaching your potential. Utilizing functional medicine modalities, we truly take you as an individual into account and address everything from A-Z.

When you work with us you are never alone, you will be with a Health Coach that will be able to help you navigate the waters on your journey and help you sort through the mounds of misinformation that you may come across as you dive into the world of health and fitness.

Lifestyle – Clearly something you have been doing has not been working for you which has led you to us. Our modern day world is unfortunately not conducive to living a life which values self-care. You need to learn the fundamental principles that will allow you to change your daily life to support your goals and reaching your potential. We recognize that this change is not an easy one as it often includes changing life long habits but with time, trust and the guidance we can provide it is all achievable.

Education – The idea that knowledge is power dates back all the way to 1597 and this ideal holds true to this day. While working with our time we will continually educate you throughout the process giving you the power to put the control of your own health and life back into your hands. When you have the knowledge to see the misinformation that has been fostered into society it becomes much easier to see the light on the other side and make the choices that are best for you.

Empowerment – The feeling of empowerment comes in many forms. You will not only feel empowered from the education you receive but also from setting and accomplishing goal after goal. You will find that this feeling of empowerment not only affects your health and fitness journey but also your everyday life. As you begin to see your body and mind go in the direction you have been aiming for possibly years the feeling of pride, confidence and success will deliver you the empowerment you didn’t even know was lacking.

Diet – We as a society have been misled on what a proper diet is and what the word diet alone is; A diet by definition is how you eat, it’s not any type of dogma, macro split, or way of cooking, it is simply how you choose to consume your nutrients. However, our perception of a proper diet to support our goals has been completely broken down and skewed to match a certain criteria or corporate gain that does not take you as an individual into consideration. With the guidance from our team to feel empowered to trust your education and change your Lifestyle to reach your potential you will naturally adopt a diet that is appropriate for you and you alone.

Supplementation – There are times that diet and lifestyle alone can’t quite complete the journey ahead of us, this is when we pull in additional aids in the form of natural supplementation that has been highly tested and regulated with a background that is self-proving. Everyone needs a little help every now and then which is when supplements come into play.

By utilizing the best in the game, we can ensure that what we are calling upon is actually what is going into the body unlike nearly every store-bought supplement.

Our entire team is here to support you through thick and thin. We all know personally what it is like to be in a position that is not what you desire for yourself and how hard the struggle can be to regain control. However, with the help of everyone connected to Nutrition Dynamic there is hope and a promise that you can Reach Your Potential Through Nutrition & Lifestyle Change.

Meet The Team

Vince Pitstick - Founder & CEO

Vince Pitstick has been in the health and wellness field for over 15 years. Beginning as a personal trainer, and competition/lifestyle nutrition coach near Chicago IL. He began a journey of blending performance nutrition programs and functional medicine sciences ten years ago working as a functional medicine consultant for Metagenics. 

Working as a Functional Medicine Consultant, he has helped hundreds of Physicians in the mid-west bring natural based programs to their office with the latest in natural technology and coaching to help their patients. Specializing in the areas of gut health, auto immunity, blood sugars, weight management, fibromyalgia, and pcos, Vince has helped develop programs that has transformed thousands of lives from the medical and fitness industries. 

In an endeavor to create a place where client centered, natural care was the priority of the practice, he opened Nutrition Dynamic in 2012.  Developing a coaching institute to teaching dieticians, nutritionists, personal trainers, and health coaches how to be the best in the industry.

Vince and his team of coaches are now one of the largest coaching companies in the United States. They cover all areas of nutrition, everything from top of the line sports performance programing to disease management programs across the U.S.  The goal is to impact world health, one coach/one client at a time.


Tamesha Calloway - Director of Health Coaching 

While fighting her own battle with weight loss and depression, Tamesha Calloway came to Nutrition Dynamic in search of new beginnings.

First entering the Dynamic family as a member of Team: Alpha and competing in the NPC in Bikini, Tamesha soon saw there was more to the industry than social media had glorified.

Beginning as a personal trainer and becoming quickly intrigued by functional nutrition, Tamesha began studying and working towards changing the lives of those not living on their own terms.

Today, Tamesha thrives as our Director of Health Coaching by continuing to changes lives through nutrition, supplementation, education and accountability.


Kristen DeAngelis - Head of Dietetics & Education Manager - Health Coach

Kristen is a passionate and enthusiastic Registered and Licensed Dietitian, YA Registered Yoga Teacher, ACE Personal Trainer, and Health Coach. Kristen has completed her BS in Nutrition + Dietetics and Exercise + Health Promotion at Virginia Tech University. She completed her dietetic internship at Ingalls Hospital, Chicago IL.

Kristen has worked as the personal Dietitian, for Joe Cross from the hit film Fat Sick and Nearly Dead, as well as worked for hundreds of individuals over the past 5 years as a Dietitian working as the lead RD for Tri-Health’s non-surgical weight management program, Kenwood Womens Center for outpatient nutrition, as well as lifestyle and nutrition under her private practice Kristen DeAngelis Wellness, LLC.Kristen has completed 2, 200 Hr yoga teacher trainings in both Seattle, WA (Iyengar), and Rishikesh, India (Vinyasa/Hatha), Yin/Meditation (Cincinnati, OH), and various intensive trainings under the ashtanga practice throughout the world.
Kristen is now located in Chicago, IL where she continues to teach yoga, provide nutrition consulting for various virtual and local groups, and of course serve as a passionate Health Coach for Nutrition Dynamic.
Kristen is originally from Boston, MA and loves being with family, friends, traveling, running, skiing, meeting new people and having engaging conversations. Her contagious energy and inviting personality allows you to connect deeper to achieve lasting changes for your health. Kristen’s mission is to have a meaningful impact on the health, happiness and vitality of peoples lives using food and lifestyle as medicine.


Alan Kleesattel - Director of Operations - Health Coach - Director of Personal Training

Alan is thrilled to be working with Nutrition Dynamic. Proper nutrition and physical fitness became all too important for Alan when he became ill and dropped to 108lbs. It was through Diet, Lifestyle Change and Physical Fitness that he regained his life.

Thanks to positive influences in this area of his life he was shown that he could impact the lives of others just as his was impacted. During this time the idea of ‘Eat for Power’ was formed which he hope to grow under and along side Nutrition Dynamic.

Alan is now able to impact lives across the country and across the globe thanks to Nutrition Dynamic and the innovative approach to Health and Fitness.


Sandy Nance - Health Coach

Sandy is a registered dietitian with her Master's degree in Integrative and Functional Nutrition from Saybrook University. While completing her degree she had the privilege of working with several Integrative Registered Dietitians. It was through them that she was able to witness the true healing power of food and found the inspiration to bring that power into her own practice. She is a true believer in food as medicine and understands the importance of finding a balance between physical and mental health.

For the past few years Sandy has been practicing one-on-one nutrition counseling focusing on weight management, gastrointestinal issues, autoimmune conditions and many other nutrition related issues. Sandy is also a certified LEAP therapist and uses MRT foods sensitivity testing to help her clients achieve their nutrition goals.

In her free time Sandy enjoys hiking, reading and hanging out in the city of Charlotte with her husband and two French bulldog puppies.


Sally Beiting - Health Coach

Sally played collegiate soccer, now she enjoys CrossFit and yoga. Sally is a foodie who loves to travel and spend time with friends. Her passion is to help others break through obstacles, fuel their goals, and thrive by adopting lifestyle change and proper nutrition.


Todd Zody - Health Coach

Todd Zody, OTR/L, CEP is an Occupational therapist with a background in Exercise Physiology. He is an ACSM certified exercise physiologist and PN1 certified nutrition coach through Precision Nutrition.

As a health and nutrition coach, Todd works with clients to improve their nutrition and lifestyle habits and to create sustainable changes that enhance their health and well-being. Todd has worked for many years as a personal trainer where he specializes in helping clients lose weight, gain strength, and improve their health and vitality. He works closely with clients of all ages, including those with various medical diagnoses.
In returning to school for his graduate work it became evident that Todd belonged on the preventative side of healthcare. Rather than help them manage a chronic problem after the fact, Todd’s passion and purpose lie in helping others prevent and reverse potential chronic conditions through lifestyle and behavior change. Indeed, Todd has been helping others live a healthy lifestyle for years, knowing early in his personal training career that just working out was not enough to solve the complex health issues people are facing. He has since been expanding his understanding of other important factors like nutrition, stress management, sleep, and community.
Todd enjoys meeting new people and helping them find true and lasting health and wellness so that they too may live out their own passion and purpose.

Cassandra Suarez-Becker - Health Coach

Cassandra Suarez, MS, RDN, LDN, cPT is a Registered Dietitian, ACE-certified personal trainer and Nutrition Communication Specialist who believes food is medicine and healthy food should taste great!

Fueled by her own health struggles and a deep passion for nutrition education, she has held positions in clinical, community, research, and private practice settings, all centered around teaching people how to live healthy and fulfilling lifestyles by getting to the root causes of their health issues. Her nutrition communication experience includes working at Balance Your Life, a healthy lifestyle campaign on the Tufts University undergraduate campus aimed to promote healthy lifestyle behaviors. She has also been featured in Tufts Nutrition Magazine, Tufts Nutrition Letter, Self Magazine, and Reader’s Digest, as well as having several scientific publications. Cassandra holds a Bachelor of Science in Applied Health Science from Wheaton College (IL) and a Certificate in Nutrition and Dietetics from Simmons College. She completed her dietetics training at Tufts Medical Center and has a Master of Science in Nutrition Communication from the Tufts Friedman School of Nutrition Science & Policy.
Personally, Cassandra loves nothing more than cooking great dinners and exploring new foods. She is originally from Boston, MA, but now resides in Colorado. She enjoys Zumba and turbo kick, relaxing poolside, cooking up tasty and nutritious concoctions in the kitchen (including presentation – e.g. cutting rosebuds out of strawberries), and meeting with friends over a steamy cup of tea or thrift store adventure. As a side note, she loves to travel and has visited nine countries, which has given her a new perspective on health and nutrition.

Lauren Hawkey - Health Coach

Lauren is passionate about all things holistic health, functional medicine, nutrition and fitness. Lauren was led to health coaching after struggling through her own health troubles due to restrictive food habits and overexercising, and through her journey, she found a true calling to help others.

She studied for four years to complete a Bachelor of Health Science, with a double major in nutrition and exercise science. She spent additional time dabbling in naturopathy and pharmacology, learning from incredible teachers and practitioners. Lauren’s speciality and area of interest is based in hormonal and metabolic health, and she is a proud science-nerd who will often have a textbook or research article in-hand! Her mission is to help people live their healthiest, happiest lives, and create a culture and a future that encourages others to live to their fullest potential in every way. Her coaching style aims to support her clients to cultivate a positive relationship with their body, food and activity, helping them to feel empowered, educated and capable of making healthy choices for their own wellbeing.


Alli Rivera - Health Coach

Alli Rivera is a registered dietitian who earned her degree at the University of Wyoming. She is an old soul who was born and raised right outside of Yellowstone National Park and married her best friend, Quinn. She enjoys anything outdoors, quality time with her loved ones, working with her hands (painting, writing, gardening, cooking), reading anything from Christian books to nerdy functional nutrition and how to create a safer home, sharing wellness with those around her through her Instagram wellness page, Cultivate: Gospel-Centered Wellness, and hosting friends with her husband in their home.

She fell in love with the functional side of nutrition when conventional treatments lacked answers to her ongoing gut and hormonal imbalances. Her own road to recovery fueled her motivation to see others find healing and wellness too. She started out in the client’s shoes at Nutrition Dynamic and understands the ups and downs in the process that is healing. She finds joy in walking in two of her deepest passions – wellness and relationship as she comes along side each of her clients.


Ashlyn Showalter - Health Coach

Ashlyn started her journey in college as a student of Exercise and Health Science and through the knowledge she gained, transformed her health & her life. She is so passionate about health because she personally experienced how life-changing it was for her. After getting her NASM personal training certification, she started her own online business coaching women through their own body & health transformations. 

After a year or so of coaching women through weight loss, she started to realize it's not just as simple as move more, eat less. She noticed patterns in some clients who had gut issues, fatigue, weight loss resistance, and other symptoms. She wanted to help with more than just weight loss, but as just a personal trainer, her scope was limited. She also began to experience gut issues, hormonal imbalance, acne, adrenal fatigue, among others.

After seeing multiple doctors, getting diagnosed with SIBO, seeing her hormones imbalanced, trying all kinds of protocols, and nothing working, she finally found Vince and Nutrition Dynamic. They made sense of everything that was going on in her body & helped her heal. She realized one of the biggest causes of her symptoms was putting stress on her body, over-training, and under-eating. She was doing everything "right" by the fitness industry standards, and yet her body was breaking down.⁣

After healing her body, she started to feel like what she was doing (fitness coaching) wasn't fully in alignment anymore which led her to joining Nutrition Dynamic's functional coach training program to dive deeper, become a better coach, and help other women heal their bodies.

Ashlyn lives in Venice Beach, California with her boyfriend and pup Luna. She loves all things wellness & the outdoors- meditation, yoga, acro-yoga, beach, hiking, slacklining, and weightlifting.


Beth Bell - Health Coach


Beth Bell is a certified Health Coach, E-RYT 200, and CPT. She has been passionate about fitness, nutrition, functional medicine, and longevity since she was a little girl. After struggling for years with an eating disorder, gut problems, and adrenal fatigue, and going to practitioners in all areas of Eastern and Western medicine with no real solutions, she understands how hopeless it can feel when there seems to be no answers. Through a comprehensive approach to stress management, holistic nutrition, supplementation, and movement, she empowers her clients to take ownership of their own healing journey and guides them every step of the way in order to heal the body from the inside out so they can create the life of their dreams.



Bianca MacConnell - Health Coach


Bianca learned very early on in life that she wanted to help others on their weightloss and wellness journey.  After bring overweight since childhood and getting no help from doctors, she got control of her weight and health on her own.  She refused to be a prisoner in her body any longer and knew she wanted to pursue her best, happiest, healthiest and fittest life! Having lost almost 100 pounds herself and kept it off for about 20 years, she became Certified in Nutrition and Wellness by AFPA in 2007 and has been practicing one-on-one nutrition counseling with focus on weight loss/management.  This achievement along with being a 9/11 survivor and having struggled much during that period in her life, Bianca has proven that she understands the challenges in life, how stress and anxiety negatively affects your health, and

roadblocks along the way to ones health and wellness journey. This led her to pursue and build her own Nutrition

and Wellness Coaching business, BUILT BY BIANCA LLC. After moving to the Greater Boston Area, her focus shifted to trying to help people resolve their health issues as that seemed to always come up when undertaking a weightloss program.  It was then that she needed to dig deeper and found Nutrition Dynamic and became a Functional Health Coach!

Bianca is also fluent in Spanish and Italian and enjoys community volunteer work along with her husband.  She is compassionate, an attentive listener and positive towards achieving


Caroline O’Connor - Health Coach


Caroline is a Registered Dietitian and Personal Trainer actively blending her passion for nutrition with her love of bodybuilding.

Depressed, anxious and not comfortable in her own skin, she dove into the world of fitness head on, finding confidence and empowerment through weight lifting. However, Caroline quickly realized true achievement of a “healthy lifestyle” wasn’t found only in the gym.

In true Caroline fashion, she threw herself back into the world of nutrition, looking for answers beyond a pill to address her depression and anxiety. That was the start of Caroline’s belief that food is not only medicine, but also fuel. Fuel for an active, healthy lifestyle. 

She finished up her Bachelor of Science in Exercise Science & Dietetics from Miami University (OH), completed her dietetic internship with a sports nutrition concentration and then moved on to St. Petersburg, FL where she currently resides doing what she loves: health coaching.

Caroline helps her clients ditch the diets, become strong and confident, and develop habits to support a healthy, sustainable lifestyle. One of her favorite quotes is “You don’t have to be great to start, but you have to START to be great.” She motivates and supports her clients to just START, because she realizes how scary, yet rewarding, that first step can be.

In her free time you can find her cooking up a storm, working out, and adventuring with her dog, Jayda.


Jeremiah Eskew - Health Coach

Health, fitness, nutrition, alternative methods of health, and healing have all been ingrained in me from early childhood. Benefitting from growing up in a household of garden fresh, naturopathic methods, no wonder I have embodied the belief that “Food is Medicine”.

This belief hasn’t always held the highest position of focus in my daily habits, but through figuring out lifestyle habits that were life-taking as opposed to life-giving, I’ve come to appreciate my health. The habits and foods that make me feel the best, most energized, vibrant. This food and lifestyle rhythm can be different for each person. Its my passion to help guide and direct in finding that rhythm.

Educated in nutrition with science and application, based in a background of multiple college courses of anatomy and physiology, during my study as an athletic trainer. Always diving deeper into research, trials, further education is number one priority in being able to impact the most people possible.

Personal application has come in many forms. Running, crossfit, weightlifting, yoga, hot yoga, pilates, bodybuilding, obstacle course racing. No matter your size, shape, physical limitations, current nutritional IQ, I truly believe that anyone with time, commitment, and dedication, can achieve anything! I am on a mission to help as many people possible down the path towards their goals and dreams!


Kim Triphahn-Cimo - Health Coach


Kim Triphahn-Cimo, BSN, RN is a Neonatal Intensive Care nurse whose passion goes far beyond helping people take their first breath. Before obtaining her Bachelor’s in Nursing, she received a Nutrition degree from the University of Georgia and became a NASM Certified Personal Trainer. Her passion for wanting to help heal others through nutrition and lifestyle changes began with her own medical struggles. After healing her body from the inside out with the help of Metagenics products and amazing practitioners, her love for functional medicine sky rocketed. When Kim found Nutrition Dynamic and saw all the amazing knowledge they had to offer, she was ecstatic at the opportunity to become part of the team. She is also a food fanatic who loves to be creative in the kitchen and a workout warrior who likes to spice it up in the gym. She looks forward to helping you heal from the inside out!



Sammie Gay - Health Coach


Sammie is a passionate and enthusiastic accredited Exercise Scientist with a major in Cardiac Science and she has a thirst for knowledge when it comes to Nutrition. Sammie has lived in sunny Brisbane, Australia her whole life, but has roots in New Zealand and travels to the USA as often as she can.

She has been a personal trainer for 8 years and she completed her Bachelor degree in 2017. After years of under eating and over training as well as two bikini competitions back to back, her hormones became imbalanced and as many others, she gained a lot of weight, experienced crazy mood swings, insomnia, gut problems and just felt like she had lost control over her body and her life. 

She became passionate about natural health and functional medicine through her own journey with hormones and her goal is to support as many women as possible understand that you can reverse metabolic problems and hormonal imbalances and get your body and life back and she hopes to make that journey easier for others than it was for her. 


Stephanie Wagner - Health Coach 


Stephanie is a Registered Dietitian Nutritionist, Certified LEAP Therapist and Health Coach. She completed her BS in Human Biology with an emphasis in Nutrition and Dietetics from the University of Wisconsin Green Bay. Stephanie later completed her dietetic internship through Priority Nutrition Care.

Stephanie has spent the last few years working within both a surgical weight management and diabetes program.  Through her clinical work and personal struggles with digestive issues and cystic acne, she realized the limitations of conventional medicine on its own. During that time, she was drawn to learn more about the power of functional medicine. She has since dedicated her time to continually learn about the human body so she can help others feel amazing!  It is her mission to build connections with clients and empower them to stop just surviving and to start thriving.

 Stephanie currently resides in Wisconsin with her husband and fur baby. In her free time, she enjoys walking her dog Riley, paddle boarding and cooking for her family.