The Core Diet Blog

Amanda Cassell

Ironman Triathlete, and Registered Dietitian

Amanda Cassell

Registered Dietitian


Amanda has been a registered dietitian since 2002, after she graduated with a Bachelor's degree in Food, Nutrition, and Dietetics from Mississippi State University. She completed her dietetic internship at St. Dominic Hospital in Jackson, MS. She's now working with QT2 and the Core Diet to bring her nutrition knowledge to her passion for triathlon and endurance sports.

Amanda is also the president of the Mississippi Heat Triathlon Team. Amanda has helped the team grow from a very small number to over 200 triathletes. Beginning her training years ago with no background in swimming or biking when she first started triathlon, she enjoys watching the passion grow in others as they train for their first triathlon! She has also learned over the years how extremely important nutrition is to peak performance.

Amanda has become an accomplished athlete over the last 5 years with over 12 marathon finishes, including qualifying for the Boston Marathon multiple times, as well as the New York City Marathon. Amanda is a 2x Ironman triathlete, competing at Ironman Florida in 2008 and Ironman Canada in 2010.

The Game Changer – Nutrition Case Studies

As a registered dietitian (RD), I have always known that nutrition was important for health, disease prevention, and weight loss. Throughout my college years, and during my dietetic internship, this was stressed incessantly, time and again. Clinically, I had learned a great deal of useful information, but my specialized education had never focused specifically on sports-related nutrition.

Growing Pains of a Newbie Triathlete

We've all been there. Ah, the first year into the sport we love so much called triathlon. Can you recall all the clumsy things you did as a newbie when just getting into the sport? Please tell me you've done some not-so-intelligent things like myself!


Nothing says indulgence like a nice, big order of french fries, sprinkled with plenty of salt, and dipped into a big pile of ketchup. Mmmm!!!! Or, perhaps a big gooey slice of cheese pizza? Wonderful for your taste buds, but not so good for your sodium levels. If you've been trying to cut back on your sodium intake, with just a pinch of table salt on your baked potato and a dash on your scrambled eggs, be advised that a pinch here and a dash there can quickly add up to unhealthy levels!

Hydration - Not an Option!

I can remember it like it was yesterday. A warm and humid day in April, sweat running down my face, taking each step in stride and longing for the finish line of the Country Music Marathon. However, if you were to search for my results from that year, they would not exist.

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