We have a team of dietitians to help you succeed at
whatever your health goal might be!
We are trained in a variety of expertise and experience
with many different health conditions.
Please see some of our area of specialities below
and then click book an appointment to view that clinician's schedule.
Weight management: Gain, loss, maintain
Sport & exercise performance
Metabolic syndrome
Diabetes, pre-diabetes, type 1&2, gestational
PCOS & female specific nutrition
Bariatric surgery pre/post op
Food allergies and intolerances
Gut health: IBS, Colitis, Crohn's
Thyroid health: Hashimoto's, low/hypo & high/hyper thyroid
Heart health: High cholesterol, high blood pressure, high triglycerides, heart disease
Vitamin & mineral deficiencies
...and more!
Marley Oldham Carnes
Business Owner
Registered Dietitian Nutritionist
My passion is to help others create sustainable habits that improve their health and quality of life.
Weight Management & Exercise Performance
Mood & Food Connection
Heart Health
Marley has helped hundreds of people transform their lives through improved fitness and realistic nutrition strategies that improve health and overall wellbeing. She is a Registered Dietitian Nutritionist with a background as a Certified Strength and Conditioning Specialist and CrossFit Level 2 Coach. She holds Bachelors of Science in Dietetics from Texas A&M University, a Masters in Nutrition from Kaiser University and as like all Registered Dietitians she has completed an intensive professional internship and passing of a national board exam.
She had the honor of serving our military members deploying as a civilian on board the USS Harry S. Truman as their Navy “Fit Boss”. She met her husband, John Carnes, in Yokosuka, Japan at the CrossFit gym on base where she was the Navy Fitness Director. She now runs Marley Nutrition and Fitness based in her hometown of Frisco, Texas. She works as a medical provider for nutritional counseling with a focus on fueling for optimal performance, the importance of eating patterns and mental health, and specializes in weight management. Her passion and commitment is to motivate and help others implement realistic and individualized healthy habits that are sustainable and enjoyable!
Through practical steps with nutrition, fun, and effective movement, everyone can reach their goals!
Melissa "Missy" Croyl
Clinician, Registered Dietitian Nutritionist, Certified Personal Trainer and Yoga Instructor
RD, LD, RYT 200, CPT
Weight Management Meal Planning & Exercise Performance
Blood Sugar Control (diabetes, pre-diabetes, insulin resistance)
Intuitive Eating & Finding Food Freedom
Gut Health
*VIRTUAL ONLY
Missy has been helping men and women with their fitness and wellness journey the past 10 years, serving as a dietitian, yoga instructor and personal trainer in the DFW area and Houston. Her passion for helping clients ditch the expensive and restrictive yo-yo dieting cycle has led her to Marley Nutrition and Fitness, where she teaches others how to make their favorite foods fit into their lifestyle while aligning with their weight and health goals!
Outside the clinic, Missy enjoys helping people find their dream homes and investment properties, playing volleyball, and going to the dog park with her pup!
Seeing clients become stronger, energized, happy, and more confident is the reason I love my job!
Weight Management & Exercise Performance
Habit Building
Young Adults/Teens/Pediatrics
Abby McNatt
Clinician, Registered Dietitian Nutritionist
Abby has always had a passion for nutrition and fitness. Whether it was playing sports, traveling to national parks, or her favorite spin class, staying healthy and a fun life have always gone hand in hand. Upon deciding to make a career out of her passion, Abby attended Texas Tech University where she earned a B.S. in Nutrition and Dietetics and where she is currently pursuing a Master’s degree in Nutrition.
Abby’s goal as a Registered Dietitian is to help others live life to the fullest. She knows this can be done when we prioritize our health and create sustainable habits. Getting to see her clients become stronger, happier, more energized, and more confident is the reason why she loves her job.
Here to help clients heal their relationship with food and themselves!
Katlin Stanley
Clinician, Registered Dietitian Nutritionist
MS, RDN, LD
Weight Management, Mood & Food Connection
Katlin has had a passion for helping others since a young age. As she grew up, she realized her love for nutrition and fitness could align with this passion. Katlin attended Texas Woman’s University where she earned her B.S. in Nutrition & Dietetics, is currently pursuing her M.S. in Nutrition from Lamar University, and is excited to continue learning by working with the community.
As a Registered Dietitian, Katlin hopes to help others attain a fulfilling, high quality life through individualized care. She believes this can be achieved through creating sustainable goals, healing relationships with food, and making healthy habits fun!
Take care of your body.
It's the only place you have to live.
Associates of Science in Business Administration
Ashley Appleby
Patient Care Coordinator, Billing Administrator
and Social Media Manager
Ash is an enterprising, dynamic, and performance driven rockstar known for attention to detail in managing high-volume corporate-level environments requiring the ability to prioritize and maintain consistent and efficient organization. Growing up in Chicago provided her with an assortment of food options for living a healthier and fulfilling life - when you put your mind to it, the possibilities are endless! In her personal life, Ash is a lifestyle photographer who enjoys capturing beautiful moments while traveling the world with her quirky husband and amazing daughter.