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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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As a Nutritionist, I Love This Protein-Packed Take on the Mediterranean Diet

Our new High-Protein Mediterranean Cookbook delivers fresh, easy recipes packed with protein.

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9 Most Effective Collagen Supplements for Skin and Hair, Reviewed by Dietitians

Need extra support for skin, hair, or joints? Experts share research-backed collagen picks.

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Do Collagen Supplements Work? Experts Explain the Potential Benefits

Health pros break down how collagen may benefit your skin, joints, digestive health, and more.

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Dietitians Say These 15 Iron-Rich Foods Can Boost Your Iron Levels Naturally

Plus, tips that help your body absorb iron better.

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I’m a Nutrition Expert—These 10 High-Protein Foods Help You Stay Full

Protein-packed picks to support metabolism, fuel weight loss, and keep you satisfied.

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What Is the Daniel Fast Diet Plan? Pros, Cons and Meal Ideas

Here's a list of everything you can (and can't) eat on this 21-day diet plan.

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8 Best Folding Treadmills for Small Spaces, Tested by Fitness Experts

These space-saving picks are a game changer.

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What OB/GYNs and Dietitians Want You to Know About Perimenopause Supplements

Experts separate fact from fiction on perimenopause supplements.

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Are Sardines Actually Healthy? The Answer Might Surprise You

Nutritionists weigh in on the popular tinned fish.

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The Best Protein Powders for Women—for Muscle Gain, Weight Loss, and More

These RD-approved picks make getting enough protein way easier.

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Feeling Overwhelmed? Try These 3 Daily Burnout-Prevention Habits

A clinical psychologist shares the everyday practices that help you stay resilient.

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