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
Jennifer Aniston Reveals Her Beauty and Wellness Secrets
Including her favorite exercise band for iconic toned arms.
Jennifer Aniston Says This Workout Made the Biggest Difference in Her 50s (Exclusive)
The actress also opens up about why four workouts a week is her sweet spot.
We Tested 40+ Meat Delivery Services—Only These Made the Cut
From budget-friendly boxes to premium splurges, these meat delivery services stood out for quality, value and flavor.
Health Experts Explain The Differences Between Vitamin D2 and D3
Both forms can help you absorb calcium.
The Surprising Menopause Symptom No One Tells You About—And How I Got Through It
I expected the brain fog and hot flashes, but I wasn't ready for frozen shoulder.
How Many Calories Do You Burn Walking? Experts Explain
Your pace, weight, and route all play a role.
How to Start Walking for Weight Loss, According to Fitness Experts
Here’s how to get more out of every step, according to pros.
Should You Eat at the Same Time Every Day? New Research Makes the Case
The results were particularly surprising for men too.
The Best Time to Take Magnesium, According to Dietitians
Experts explain why consistency matters more than the clock.
I Tried Grüns Gummies for 6 Months to See If They’re Actually Worth the Hype
The celeb-loved gummies promise gut health, energy, and more—so I put them to the test.
Your Guide to Finding the Best Turmeric Supplement for Inflammation
Plus, what to know about the potential benefits, risks, and whether a turmeric supplement is right for you.