Stefani Sassos, M.S., R.D.N., NASM-CPT
Nutrition & Fitness Lab Director
Stefani (she/her) is a registered dietitian, a NASM-certified personal trainer and the director of the Good Housekeeping Institute Nutrition and Fitness Lab, where she oversees all nutrition and fitness-related content, testing and evaluation. She holds a master’s degree in clinical nutrition from New York University, as well as advanced certifications as a Women's Fitness Specialist and a Behavior Change Specialist. Stefani is dedicated to providing readers with evidence-based content to encourage informed food choices and healthy living. She is an avid CrossFitter and a passionate home cook who loves spending time with her big fit Greek family.
- Topic Specialties
Latest from Stefani Sassos, M.S., R.D.N., NASM-CPT

3 Best Foot Massagers for Relaxing Tired, Achy Feet, Tested by Experts
Because your feet deserve a break too.

How to Build a Home Gym That Works for Your Space, Budget, and Goals
Top-tested picks for every workout-from-home setup.

The Best Treadmills That Actually Make You Want to Run
Tried and tested by our fitness pros for performance and value.

Exercise Is a Powerful Tool For Menopausal Mood Changes—But It Depends Which Exercise You Do
If your mood’s been all over the place, the right type of exercise could make a world of difference.

I’m a Nutritionist Who Tested 50+ Meal Delivery Services—These 10 Can Support Weight-Loss Goals
These meal kits take the guesswork out of portions so you can stay on track with your health goals.

I’ve Used Food-Tracking Apps for Years—These Are the 9 Best Ones
With barcode scanners and AI photo tools, tracking what you eat is easier than ever.

I Tested 50+ Meal Delivery Services—These 7 Are the Best for a Low-Carb Diet
From keto-friendly meals to low-carb kits, these services deliver on flavor and nutrition.

I'm a Certified Personal Trainer—These Are the 6 Best Massage Guns for Sore Muscles
I tested 20 models to find the best ones for recovery.

I'm a Registered Dietitian Who Tested 50+ Meal Delivery Services—Here Are 8 Lower-Sodium Options I Recommend
These nutritionist-approved meal kits are heart-healthy and delicious.

The Kitchen Staples You Need to Stock Up On
From culinary must-haves to premium proteins and next-level baking mixes, these Good Housekeeping 2027 Kitchen Award winners will make every day more delicious.

I Tested Over 50 Meal Delivery Services—These Are the Best for Vegans
Making high-protein, plant-based meals has never been easier.

The Best Healthy Breakfast Foods to Start Your Day Right, According to Nutrition Experts
Stock up on Greek yogurt, bananas, and eggs.