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Meet Katie

Nutritionist, Weight Loss, Health, Diet, Nutrition, Norwalk, Darien



SIBO, IBS, UC, IBD, Leaky Gut, Chrohn's,  H. Pylori, Parasites, Worms, Candida (Yeast/Fungus), Auto Immune, Dysbiosis, Food Sensitivities 


Teenage and Adult Athletes

Eat to Perform: Caloric Intake & Macronutrient Breakdown 

Nutrient Timing

Fitness Routine



Weight Management

Metabolic Conditions: BP, Cholesterol, Diabetes, Fatty Liver, Blood Sugar, Heart Disease, etc.

Behavioral Habits

Intuitive Eating

Easy Creative Cooking

Meal Planning 

Health Education

Wellness Consulting



Cigna, Aetna, Anthem, United Health

*schedule a 15 minute call to discuss next steps*

Katie Diehl, MS, CNS, LDN is a certified and licensed Integrative Nutritionist and health expert who believes that optimal performance and health are driven by the foods you eat.  Katie received her Bachelor's Degree from Marist College and graduated with honors in a Master’s Degree in Applied Clinical Nutrition from the Northeast College of Health Sciences.  She is the owner and founder of Diehl Nutrition and a notable food blogger of ‘TheDailyDiehl’.  Katie understands and values the importance of proper health and is passionate about educating clients on the ‘WHY’ to nutrition.  Katie believes that if you understand nutrition then you'll better know how to apply it for the long term.


Katie offers nutrition and wellness counseling to individuals virtually through her nutrition platform, Healthie. She also hosts many public speaking seminars in the local area. Katie focuses on gut health/testing, sports nutrition, healthy weight loss, weight management, wellness, meal planning and delivers the ingredients you need in order to sustain a happy and healthy lifestyle.

Katie’s services are not limited to scheduled online appointments.  She also offers grocery shopping tours, teaches individuals to find their inner chef by teaching the art of getting creative in the kitchen, organizing the pantry, and offers helpful tips on meal preparation and planning for you and/or the family. 

Apart from nutrition, Katie has a passion for helping people be their strongest selves. She has 8 years of experience in the Crossfit community, and 4 years as a coach. Katie has also coached at Next Generation Fitness, F45, and JoyRide Studios. In addition, she works directly with the owner and head chef at Maikana Foods to ensure quality nutrition and hosts annual nutritional lectures for Westport, CT Girls Soccer team. 

Katie’s Philosophy:

“In today's world there are so many things that affect your health; the foods you consume, the water you drink, stress we endure, toxins we absorb, and how this all affects our gut microbiome and overall health. There is nothing more important than your health. Health also begins in your digestive tract. 


My mission is to educate, inspire and support my clients by creating a sustainable healthy relationship with their diet as well as guiding each client into lifestyle changes to enhance overall wellness and quality of life."

Please join me in reaching a place of life-long health, one bite at a time.  

Click here to book your FREE 15-minute consultation to speak about your reason for contact and how I can help you!

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