Top Reasons Swimmers Should Forego a Ketogenic Diet

Top Reasons Swimmers Should Forego a Ketogenic Diet
By Chris Rosenbloom, PhD, RDN, CSSD
Early this month, Jill Castle wrote a thoughtful article on the ketogenic diet for swimmers. This high fat diet has been popularized by bloggers in the swim community and even in the New York Times. (See Jill’s article at, High Fat/Ketogenic Diet: Love it or Lose It?)
Jill explained a ketogenic diet and the biology and chemistry of what happens when we cut out all carbohydrates and eat a very high fat diet (usually defined as greater than 80% fat with the remainder of calories from protein). I want to follow up and say why I think this is not a performance-enhancing diet for swimmers of any age.
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Jill explained a ketogenic diet and the biology and chemistry of what happens when we cut out all carbohydrates and eat a very high fat diet (usually defined as greater than 80% fat with the remainder of calories from protein). I want to follow up and say why I think this is not a performance-enhancing diet for swimmers of any age.
Read more: