Meet the Dietitians

“I read all of your bios and it was super refreshing to see that you don’t count calories or macros at all!”

– Brittany Jones Nutrition Group Client
Brittany L Jones, MS, RD, LD – CEO & Registered Dietitian

Hi! I’m Brittany – a Registered Dietitian, mom, wife, foodie, and owner of Brittany Jones Nutrition Group. I’ve been working with clients for over 10 years in Greenville, SC – and my biggest takeaway from my career thus far is that restricting anything (carbs/fat/time) and/or counting anything (macros/calories) doesn’t work in the long term. My philosophy has always been one where all foods fit in a healthy lifestyle. I am not about rules, or seeing things as strictly black, or white. I am about finding the shades of grey and living there. I can’t wait to meet you! Read more about Brittany here.

Christie Griffin, RD, LD, CDCES, CSOWM – Contract Registered Dietitian and Certified Diabetes Care and Education Specialist.

Hi! I’m Christie. I am a Registered Dietitian and Certified Diabetes Care and Education Specialist. First and foremost – I am a wife and a mother to a precious little girl. I have been working as a dietitian for more than a decade in both the hospital and outpatient setting. I love to help people realize that their goals do not have to be “all or nothing” and that small behavior changes can make a big difference in their lives. I do all I can to make my clients feel comfortable and heard. I hope to meet you soon! Read more about Christie here.

Catherine Johnston, MS, RD, LD Registered Dietitian

Hi – I’m Catherine. I’m a Registered Dietitian specializing in digestive health and gastrointestinal conditions. I’m a wife and mom of two and I have a background in clinical nutrition and corporate wellness. I help people address their health concerns by working together to form personalized, achievable habits to feel their best. I aim to meet clients where they are without judgement and help them feel confident in their nutrition knowledge as we work together to improve their health! Read more about Catherine here.

Brittany Thiel, RD, LD

Hi! I’m Brittany T. I am a Registered Dietitian specializing in disordered eating and eating disorders. I use a non-diet, weight-inclusive, and individualistic approach that I also apply to my own life! I have found through my experience working in both higher levels of care and in the outpatient setting, that this approach is what helps create long-lasting and realistic change in a safe environment. My goal is to work with you where you are at to help foster positive relationships with food, body image, and movement by learning (or re-learning) how to take care of your body and your mind! Read more about Brittany T here.

Julia Petty – Office Assistant

Hi, I’m Julia! I am a South Carolina native, mom to a cat and a 1-year-old daughter. My educational background is in exercise science and I enjoy being active and outdoors in a variety of ways. In addition to being the office assistant for Brittany Jones Nutrition Group, I am a registered yoga teacher and also teach a handful of other fitness classes in the Greenville, SC area. Read more about Julia here.


Simply said, all dietitians are nutritionists, but not all nutritionists are dietitians. A Registered Dietitian has additional qualifications that must be met, which include:

  • Minimum of a bachelor’s degree with course work including food and nutrition sciences, food service systems management, business, economics, sociology, biochemistry, physiology, microbiology and chemistry
  • Completed an accredited dietetic internship
  • Passed the national Registered Dietitian examination
  • Completes continuing professional educational requirements to maintain registration (75 every 5 years)

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