Nutritional Therapy Services

What is a Nutritional Therapy Practitioner?


Nutritional Therapy Practitioners are integral members of the holistic health community. We believe a properly prepared, nutrient dense whole food diet sets the ultimate foundation for optimal health and healing. We work in concert with your other medical care providers to find areas of deficiency or imbalance in the body, and correct them. We address these weaknesses through a whole food nutrition and supplementation protocol. Nutritional Therapists know that there are other important factors for health outside the scope of nutrition. We are here to help you find balance as you work towards your nutritional goals. Nutritional Therapists use an approach that is science/evidence based down to the cellular level.


What is the difference between a Nutritional Therapist a Registered Dietician?


Dieticians hold degrees in dietetics. Primary Doctor’s tend to refer patients to an RD if the individual is struggling with obesity, diabetes, failure to grow in children, or other conditions where they believe medical dietary intervention may help to control a condition. They would help change the diet (usually based on western medical dietary guidelines) in order to control the condition.

Many medical Doctor’s do not link disease with diet so people find they have to seek help elsewhere. For example, an individual who is always fatigued may get a diagnosis like chronic fatigue or depression, and get treated with medications to help control the issue. Nutritional Therapists focus on the link between health and nutrition, with an emphasis on identifying the root cause of a health problem, rather than trying to keep symptoms at bay or suppress the condition. For example, fatigue may be because of unstable blood sugar, or a thyroid issues. Once the root cause is identified, nutritional therapists help come up with a nutritional plan that may include supplement recommendations to help fix underlying cause of the symptoms.

The payoff of hiring a Nutritional Therapist is that you will have the tools necessary to heal your digestion, balance your blood sugar, increase your energy, increase your self awareness, decrease inflammation, feel younger, stabilize your moods, and the list goes on and on.


Some of the symptoms I can address as a Nutritional Therapist:


  • fatigue
  • joint pain
  • irritability
  • moodiness
  • frequent hunger
  • sugar cravings
  • indigestion/heartburn
  • other digestive issues such as colitis and constipation
  • skin problems
  • food sensitivities
  • weight gain or inability to lose weight
  • autoimmune conditions




“Before working with Kathryn, I felt very out of touch with my body and what it was trying to show me. I was lethargic, cloudy, fatigued and overall just felt very ‘blah’. Kathryn was very thorough with her assessments and recommendations and I am now well on my way to a much happier, vibrant and healthy life. I feel excited to continue on this journey and am so thankful to her for her compassionate expertise. She is truly a master of her craft!”-Theresa


“I was diagnosed with hypothyroidism several years ago and had gotten used to the idea that I would always be on medicine, I would never have energy, and my life just wouldn’t be what it used to. But I heard about Kathryn through a reputable business that i frequented and thought it might be worth a try. She was very nice and made me feel comfortable discussing all of the issues I was having. She is obviously very educated and well-informed about nutrition, but it was her personal experiences with an auto immune disease that really made me trust her. She is willing to work at whatever pace her client needs, and for the first time in a long time, I had hope that things could be different. Kathryn immediately got me started on a regimen of supplements with a guideline for foods to avoid and consume, but she also suggested multiple cookbooks and other reading materials so I could learn more about why I was making these particular changes. I felt confident in her approach and within weeks, I had more energy than I could remember. I appreciate how available she makes herself in between appointments, via email and phone- it makes me feel like I’m not in this alone and helps me make better choices on a daily basis. I would highly recommend Kathryn to anyone looking to better themselves through nutrition and wellness, but specifically, I wish everyone who was ever struggling with an auto-immune disease had the opportunity to work with her. In just a short amount of time, it has changed my life.”- Katie


“I have been seeing Kathryn Kos for almost three months now.  I have been dealing with some severe digestive problems for quite some time, and Kathryn was recommended to me through my cousin who is a yoga instructor in the area.  She told me about Kathryn, about what a Nutriontal Therapy Practitioner does, and about how she is able to view digestive health through a different lens then most.  I had been to a few traditional dietitians before.  Ones that did not help and that didn’t seem to understand the severity of the eating problems that I was going through. I figured that I owed it to myself to at least give this new form of therapy a try.  Little did I know that it would have been the first step on my journey to healing with Kathryn’s help.

What first struck me about Kathryn is how warm, caring, and kind she is.  I felt as if she was authentically listening to my concerns, and quickly realized that she was extremely knowledgeable and informed in her field.  She was able to give me a concrete protocol of what to do that was completely personalized around my needs.  She was able to provide me with recipes, literature, and guidance about the best way to eat for my body and how to replenish my individualized needs.  The tools that Kathryn incorporates into her treatment are broad enough in range to see individual patterns occurring in one’s body, and it is fascinating to see how they adjust and improve as one progress through her protocol.  The Lingual Neuro Testing was a huge catalyst for me to understand the organs and systems that were involved with my illness and provided me with great direction. Through following Kathryn’s individualized plan for me, I have been able to see physical improvements as well as positively increase the overall level of my quality of life. 

Kathryn is a very dedicated professional.  She has gone out of her way to research and investigate new treatments and ideas for me, and has been in constant communication with me since I first reached out to her.  I would recommend her services to everyone with is dealing with health issues, but also to anyone who is seeking to advance their nutritional practices and improve the condition of their life.  Kathryn has provided me with invaluable knowledge, tools, treatment and most importantly- care.”


“I started with Kathryn a little bit differently to most. I was already mostly Paleo and fully versed on what being Paleo meant and why it was beneficial. I’m also a personal trainer so exercise wasn’t a problem for me. I was diagnosed with PCOS, endometriosis and hyperinsulinemia and I felt really lost. I had gained 20kgs in a year, my appetite swung from non-existent to ravenous, I was in excruciating pain ALL THE TIME. Doctors suggested drugs and surgery, friends suggested acupuncture and diet. I wanted to do a combination of both, but I also wanted to get help because I felt so overwhelmed. Kathryn helped lay it all out for me, especially the grey areas of Paleo and why they wouldn’t work for me and my conditions. She directed me to alternative medicines to help get my hormones balanced and back on track, and she held me accountable so those “occasional treats” actually became occasional (instead of every other day while I ate my feelings)! I had many hiccups along the way, food poisonings, surgery, sickness, actual reaction to one of the alternative medications… she worked with me through every step. Eventually she made a brilliant suggestion to try AIP and I can’t even begin to tell you how thankful I am for that suggestion. She held my hand through the difficult elimination phase, responded to my all-hours-of-day-and-night texts, and totally understood where I was coming from (having done it herself). I’m pain free for the first time in living memory, I actually have energy again, I have a healthy and normal appetite, and just had my first normal, regular period. Can’t recommend this lady enough. If she doesn’t have the answers she will find them for you, drawing upon a huge knowledge base and mentors. She knows exactly how you feel and where you’re coming from. If you’re struggling with disease and looking for a way to get on top of it, Kathryn should be your next stop!”



“I started working with Kathryn in the fall of 2014. I had recently had a baby, and after a difficult pregnancy, I found myself dealing with an even more difficult postpartum experience. I was suffering from postpartum depression and serious fatigue from a lack of sleep and a poor post-baby diet. Kathryn worked with me to pinpoint problem areas in my digestion, and set up a program that would provide the nutritional support I needed to start feeling better all around. After drastically changing my diet and returning to regular exercise at Crossfit Soulshine. I was able to return to work and start feeling like myself again. I even went into my stockpile of “I will never wear this again” clothing to pull out some pants that I thought would forever be too small! I have lost fat and gained muscle and am feeling confident in myself again.

I feel comfortable contacting Kathryn at any point in time with questions. She has also been an invaluable resource while continuing to breastfeed my son and start the process of turning him into a paleo baby with solid foods! In one conversation with Kathryn, you will realize that she really knows her stuff and is passionate about helping people heal the right way and get on track to live a long and healthy life”   -Marissa

About Kathryn:


Kathryn Kos is a Nutritional Therapy Practitioner (NTP)  through The Nutritional Therapy Association, and a Certified Lactation Educator/Counselor through The University of San Diego. Her undergraduate degree is in Movement Science from Westfield State College. Her Master’s degree is in Rehabilitation Counseling from Springfield College. Kathryn is a nutrition blogger over at, where she shares whole food recipes and articles pertaining to health and wellness.  She specialize in healing digestion, balancing blood sugar, autoimmune conditions, and weight loss.

“My own health struggles occurred through years of following mainstream western nutritional advice led me down this path. I was eating what I thought was a very healthy diet (following conventional medical advice). However, I was struggling with feeling good inside and out. I ended up being diagnosed with several Autoimmune Conditions. I was having horrible gall bladder attacks and living on antacids. My thyroid was enlarged, and I struggled with anxiety and insomnia. My endocrinologist wanted to wait until my thyroid stopped functioning, and put me on a medication. That was the only solution offered. Doctors wanted to put me on medications. My philosophy is to find and heal the root cause of the problem, rather than fix the symptoms by taking a medication or removing an organ. Through my own intense research, I began my real food journey. My health changed drastically and my autoimmune markers went way down. I started to feel amazing and wanted to share my experience on a big level. I am so excited to share my knowledge with you!  I am dedicated to helping you realize what your bio-individual nutrition needs are, and giving you the tools to make positive changes in your life!” -Kathryn Kos, NTP


*She offers worldwide skype and phone consultations!

1, 3, 6, and 9 month packages are available

To book an appointment, call (518) 260-9749, e-mail 

Kathryn Kos, NTP


Primal Bliss Nutrition


Social Media:
Instagram: @primalblissnutrition