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
Why Experts Are Suddenly Talking About Postbiotics
Three ‘biotics may sound similar, but they each have very different roles in your body.
I Tried Seed Probiotic for 3 Months. Here's What Happened
Wait—it’s both a prebiotic and a probiotic?
What Those USDA Labels Actually Mean for Your Wallet (and Health)
From Prime to Select, here’s how USDA beef grades affect flavor, tenderness, and price at the grocery store.
Kids’ Vitamins Are Everywhere—But Do They Really Help?
As a mom and dietitian, I’ve questioned what’s actually worth giving my kids—here’s what I’ve learned.
18 High-Protein Air-Fryer Recipes Perfect for Busy Weeknights
Making healthy dinners will feel effortless.
Scientists Say Eating This One Thing Can Lower Your Alzheimer’s Risk
A recent large-scale study found a connection between eating eggs and a lower risk of this form of dementia.
I Tried a Robotic Massage—Here’s What Surprised Me Most
AI-powered massage tables are popping up in spas across the country, but can a robot really rival human touch?
Is It Safe to Take Expired Vitamins? Doctors Say It Depends
Overall, experts say “when in doubt, throw it out.”
AG1 Is Now at Ulta—but Is the Viral Greens Powder Actually Worth It?
As a dietitian, AG1 is one of the supplements I get asked about most—so I tried it myself.
Experts Say Mushrooms Contain a Powerful Antioxidant Linked to Better Brain Health
It may help support cognitive health as we age.
This Essential Oil May Repel Bugs Better Than DEET, Study Says
Wondering how to use oregano oil to take advantage of its perks? Read more here—then talk to your doctor before trying.
28 Easy High-Protein, High-Fiber Meals for All Your Health Goals
These satisfying recipes give you the biggest nutrition bang for your buck.