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Stefani Sassos, M.S., R.D.N., NASM-CPT photo

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.

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Latest from Stefani Sassos, M.S., R.D.N., NASM-CPT

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I’m a Dietitian, and I Eat This Surprising Food Every Day—Here’s Why

Most people overlook this nut, but I never skip it.

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8 High-Protein Nuts to Snack On, According to Dietitians

These tasty picks will help you hit your protein target.

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10 Best Superfoods to Eat If You're Over 50, According to Nutritionists

Healthy fats, fiber, iron, calcium, and vitamin D are among key nutrients that support healthy aging.

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Study Says This Fitness Test May Reveal How Well You’re Aging

And it doesn’t involve any special equipment either.

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Taking Vitamin D? This Is the Most Important Thing to Remember

Yes, the nutrient is essential, but you can also have too much.

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What Are Peptides? Here's Everything to Know Before You Start Using Them

It’s yet another wellness trend that doesn’t quite live up to the hype.

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The One Exercise Every Woman Over 40 Should Be Doing to Stay Strong

And no, it’s not a squat or a deadlift.

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10 Best Workout Apps for Every Goal, According to Personal Trainers

The right app can absolutely change your routine and your results.

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After Testing 50+ Meal Delivery Services, These Are the Ones I Recommend

As a dietitian, I've found a meal kit for practically every lifestyle.

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I'm a Dietitian—These are the Smoothie Subscriptions I’d Recommend

I tested over a dozen options to find the ones worth stocking up on.

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Experts Say This Simple Mistake Could Be Making Your Workout Feel Harder

Fortunately, it’s surprisingly simple to fix.

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