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

The 7-Ingredient Recipe Martha Stewart Makes Every Day
“That is what I recharge my batteries with every single morning,” the iconic TV chef revealed.

Does Rinsing Ground Beef Really Make It Healthier?
The popular kitchen trick can remove some fat, but the results may not be as dramatic as many people think.

Is Sea Moss Good for You? Experts Separate Fact From Fiction
Registered dietitians sound off on the proclaimed superfood trending on social media.

Turmeric’s Antioxidant Power Could Benefit Heart Health, Experts Say
Turmeric is everywhere, but how strong is the evidence behind claims from skin health to pain relief, cognition, and disease prevention? Experts explain.

I’m a Dietitian Who Relied on Factor Meals for a Year—Here’s My Verdict
After a year with Factor, I’m sharing the real pros and cons, my favorite meals, and why I ultimately decided to cancel.

Does It Matter What Time You Take Vitamin D? Here’s What Experts Say
For maximum absorption, how you take it is more important than when.

These Are the Healthiest Store-Bought Breads, According to Nutrition Experts
Add these hearty picks to your grocery list.

A Dietitian’s Guide to the Best Multivitamins for Women Over 40
Not all multivitamins are created equal.

Dietitian-Approved High-Protein Meal Delivery Services Worth Trying
Skip meal prep and still hit your macros with these high-protein picks.

SPF in a Pill? The Truth About Trending Sun Protection Supplements
We separate the facts from the fads to help you decide whether to swap your sunscreen for a capsule.

I Swapped My Afternoon Coffee for Hojicha—Here’s What Happened
This Japanese tea offers a cozy flavor with less caffeine than coffee.

Could Your Supplements Be Worsening Hair Loss?
Taking too many hair vitamins could actually work against your hair goals.