Your trusted voice in modern health media.
Kelsey Costa, MS, RDN
Owner,
Impactful Nutrition Consulting
& Dietitian Insights
Hi! I'm Kelsey Costa, MS, RDN, a registered dietitian nutritionist specializing in integrative and functional nutrition.
With a unique background in English and advanced research literacy, I’ve dedicated my career to cutting through the noise of modern health media to bring you clear, science-backed nutrition insights.
Through Impactful Nutrition Consulting, I partner with leading brands and organizations as a professional content writer, medical reviewer, and online media representative.
This platform serves as a collaborative hub for my ventures, including:
Dietitian Insights, an online publication written by registered dietitians.
My curated Fullscript store, which grants the public exclusive access to professional-grade supplements at practitioner-only pricing.
Nurtured Cotton Co., a mindfully sourced, pure cotton apparel line featuring nutrition-inspired designs for the whole family.
Whether you are looking to optimize your personal wellness, dive into the latest health research, or discover trusted products and resources, I’m here to support your goals!
I accept highly selective inquiries for future brand partnerships, content writing, medical reviewing, or media representation. I only partner with companies and brands I truly believe in and that align with my evidence-based practice standards. Connect with me via LinkedIn or my contact page.
Serving leading brands and media —
Consulting Services
Nutrition Writing & Science Journalism
Nutrition Reviews & Fact Checking
Professional Media Representation
Featured content
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8 Food and Nutrition Trends for 2025, Predicted By The Experts
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A Common Low-Calorie Sweetener May Raise Blood Clotting Risk
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Can a Healthy Diet Help Alleviate Chronic Pain?
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Are Protein Bars Health Food or Hype? A Dietitian Shares What to Look for, and What to Avoid
Nurtured Cotton Co.
Explore Our Current Lineup
A cozy cotton tee inspired by your little one’s favorite fall vegetable.
With softness that is gentle on sensitive skin and a durable, high-quality print, it's a perfect fit for first ventures.
Clean & Safe: Produced by a responsible supplier in an OEKO-TEX® certified facility and fully CPSIA compliant with a tracking label sewn into the side seam.
Soft Fine Jersey: Made from 100% combed ring-spun cotton fine jersey for a lightweight, soft feel against sensitive skin.
Zero Itch: Features a genuine EasyTear™ label that pulls away cleanly to eliminate neck irritation.
Playtime Durable: Built with a topstitched ribbed collar,shoulder-to-shoulder taping, and double-needle stitched sleeves and bottom hem to hold up through regular play and washing.
Sizing & Care:
Sizes: 2T, 3T, 4T, and 5/6 (Classic toddler cut, runs true to size).
Care: Machine wash cold inside out, tumble dry low.
Shipping & Policies
Free Domestic Shipping: Free economy shipping across the US.
Made to Order: Please review the size chart included in the product images and measure carefully before ordering. Each shirt is custom-printed just for you!
Final Sale: Due to the custom nature of our products, all sales are final. No returns, refunds, or exchanges are accepted.
Replacements: If your item arrives damaged or defective, please send us a photo right away so we can arrange a free replacement!
Note: Due to a delay in regional licensing, physical apparel orders are temporarily unavailable for shipping within the state of Connecticut. Digital courses and coaching packages remain fully available nationwide.
A vintage-inspired cotton tee celebrating your little one’s sweet personality and their everyday berry habit.
With softness that is gentle on sensitive skin and a durable, high-quality print, it's a perfect fit for first ventures.
Clean & Safe: Produced by a responsible supplier in an OEKO-TEX® certified facility and fully CPSIA compliant with a tracking label sewn into the side seam.
Soft Fine Jersey: Made from 100% combed ring-spun cotton fine jersey for a lightweight, soft feel against sensitive skin.
Zero Itch: Features a genuine EasyTear™ label that pulls away cleanly to eliminate neck irritation.
Playtime Durable: Built with a topstitched ribbed collar,shoulder-to-shoulder taping, and double-needle stitched sleeves and bottom hem to hold up through regular play and washing.
Sizing & Care:
Sizes: 2T, 3T, 4T, and 5/6 (Classic toddler cut, runs true to size).
Care: Machine wash cold inside out, tumble dry low.
Shipping & Policies
Free Domestic Shipping: Free economy shipping across the US.
Made to Order: Please review the size chart included in the product images and measure carefully before ordering. Each shirt is custom-printed just for you!
Final Sale: Due to the custom nature of our products, all sales are final. No returns, refunds, or exchanges are accepted.
Replacements: If your item arrives damaged or defective, please send us a photo right away so we can arrange a free replacement!
Note: Due to a delay in regional licensing, physical apparel orders are temporarily unavailable for shipping within the state of Connecticut. Digital courses and coaching packages remain fully available nationwide.
A simple, earthy, cotton tee made for your little avocado lover.
With softness that is gentle on sensitive skin and a durable, high-quality print, it's a perfect fit for first ventures.
Clean & Safe: Produced by a responsible supplier in an OEKO-TEX® certified facility and fully CPSIA compliant with a tracking label sewn into the side seam.
Soft Fine Jersey: Made from 100% combed ring-spun cotton fine jersey for a lightweight, soft feel against sensitive skin.
Zero Itch: Features a genuine EasyTear™ label that pulls away cleanly to eliminate neck irritation.
Playtime Durable: Built with a topstitched ribbed collar,shoulder-to-shoulder taping, and double-needle stitched sleeves and bottom hem to hold up through regular play and washing.
Sizing & Care:
Sizes: 2T, 3T, 4T, and 5/6 (Classic toddler cut, runs true to size).
Care: Machine wash cold inside out, tumble dry low.
Shipping & Policies
Free Domestic Shipping: Free economy shipping across the US.
Made to Order: Please review the size chart included in the product images and measure carefully before ordering. Every item in our shop is custom-printed just for you!
Final Sale: Due to the custom nature of our products, all sales are final. No returns, refunds, or exchanges are accepted.
Replacements: If your item arrives damaged or defective, please send us a photo right away so we can arrange a free replacement!
Note: Due to a delay in regional licensing, physical apparel orders are temporarily unavailable for shipping within the state of Connecticut. Digital courses and coaching packages remain fully available nationwide.
