Meet the Team

Registered Dietitians

Let's get started

As a former collegiate club and now recreational athlete, I have first-hand experience understanding the impact of nutrition on performance. I strive to help others adopt practical, sustainable nutrition habits to meet their goals and reach their full fueling potential.  


Gianna Sliby, MS, RD

As a Registered Dietitian, I love helping athletes see nutrition as a tool that can support them both in competition and in everyday life. My goal is to make nutrition feel approachable, practical, and sustainable so you can feel confident fueling your body and performing at your best.

Contact us to get started!

Insurance I accept

Insurance I accept

Currently accepting private pay clients.
Insurance options coming soon!
  • Anthem Blue Cross Blue Shield
  • United Healthcare
  • Cigna
  • Sentara Health Plans
  • HSA / FSA cards accepted

The good news - most insurance plans cover nutrition counseling! Some count it as a preventive service, while others see it as a medical service.

What that means for you:
  • Sometimes all or handful of your visits are fully covered, with no cost to you.
  • Other times, you may have a specialist copay, deductible, or coinsurance.

States I work in

States I work in

  • Arizona
  • California
  • Colorado
  • Indiana
  • Michigan
  • Virginia

If your state is not listed, please contact us, licensure laws change and we add states as we can!

My specialties

My specialties

  • Sports & performance nutrition
  • Military & service member nutrition
  • Under-fueling & Relative Energy Deficiency in Sport (REDs)
  • Food allergies & intolerances
  • Plant-based diets (vegan & vegetarian)
  • Supplement review & education
  • Lab interpretation
  • Personalized nutrition plans
  • Team & Family Education

REGISTERED DIETITIAN
Academy of Nutrition & Dietetics

Master of Science in Nutrition Sciences
University of New Haven

Bachelor of Science in Nutrition Sciences
University of New Haven


Qualifications

the Strategy to help you fuel your goals...

Let's get started

Let's get started

Individual sessions

Academy Online Course

Groups & workshops

Team & club Collaborations through the seasons

SM Nutrition has Supported athletes competing in...
High school Varsity & JV sports
Elite Club & Travel leagues
Collegiate NCAA Division I, II, & III
International Competitions


At SM Nutrition, our mission is to empower athletes with evidence based, performance driven nutrition strategies. We provide personalized fueling strategies that optimize energy availability, support recovery, and foster a healthy relationship with food. By addressing challenges like Relative Energy Deficiency in Sport (REDs) and disordered eating, we help athletes build confidence in their nutrition, maximize their potential, and achieve long term success in their sport sport and life.

our Mission

Meet the SM Nutrition Team >

1311 Jamestown Road, Suite 202,
Williamsburg, Virginia 23185
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