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Kelsey Costa, MS, RDN

Kelsey Costa, MS, RDN is a registered dietitian and writer who offers impactful nutrition consulting services to leading health brands. She is an influential figure in nutrition science communication, promoting global public health and nutrition education.

Kelsey Costa, MS, RD is a registered dietitian and writer who offers impactful nutrition consulting services to leading health brands. She is an influential figure in nutrition science communication, promoting global public health and nutrition education. For more, follow her on LinkedIn!

Highlights

Registered dietitian nutritionist (RDN), licensed dietitian nutritionist (LDN), and master certified wellness coach (MCWC) with dual bachelor’s and a master’s degree
Specializes in integrative and functional nutrition, nutrition science communication, and health promotion
Founder of Dietitian Insights, a dietitian collaborative and online publication

Experience

Owner of IMPACTFULnutrition.co, a nutrition consulting and communications company
Dietetic Intern at Wellness Workdays, supervised practice (practicum)
Undergraduate Research Assistant with Framingham State University and Boston Children’s Hospital, FB4 Weight Loss Diet Study

Education

Kelsey Costa holds a bachelor of arts in English from Rhode Island College (2016) and a bachelor of science in food and nutrition (dietetics) from Framingham State University (2020). She completed a graduate fellowship and master of science in health and wellness management at Merrimack College in 2021.

Author posts

Dietitians Swear by These 6 Snacks for Beating Cravings—Here’s Why

14 minute read

Looking for snacks to satisfy your cravings? We asked MyFitnessPal Registered Dietitians to share

5 Signs Your Diet May Not Be as Balanced as You Think

10 minute read

Think you've got a a balanced diet? You might be missing key nutrients. Discover

How Long Does It Take for a New Habit to Feel Natural?

9 minute read

New research busts the 21-day habit myth, showing that habits can take up to

What a Dietitian Wants You to Know About Artificial Dyes

5 minute read

Artificial dyes are common ingredients in our food. Many people think they're bad for

What to Eat for Breakfast If Trying to Achieve a Calorie Deficit

9 minute read

Discover the best breakfast foods to support a calorie deficit while keeping you full

What People Eat Around the World on Valentine’s Day

7 minute read

Ever wonder what people around the world eat to celebrate Valentine's Day? MyFitnessPal data

Is Extra-Virgin Olive Oil Really a Health Food?

8 minute read

Is extra-virgin olive oil really healthy? Discover the latest research on EVOO’s benefits and

How Adam Devine Uses MyFitnessPal to Achieve His Health Goals

6 minute read

Adam Devine, the comedian and Righteous Gemstones star, is proving that achieving health goals

100 Years of Fad Diets: Experts Weigh In

13 minute read

Diet trends have come and gone over the years. Some were quirky, others had

Sober Curious? Here’s a Dietitian’s Guide to Doing Dry January Right

11 minute read

Are you sober curious? It's a trend that has people rethinking their relationship with

8 Food and Nutrition Trends for 2025, Predicted By The Experts

15 minute read

Food trends are constantly evolving, influenced by everything from new scientific research to cultural

How to Prepare Thanksgiving Dinner for Less, According to a Dietitian

10 minute read

Thanksgiving on a budget is easier than you think: read more to find dietitian-approved