The field of sports nutrition is constantly evolving with new research. The key is to find a consistent source of information you can trust. The following are a few sources that I personally trust and make use of when building my own programs.
PRECISION NUTRITION
www.precisionnutrition.com
Precision Nutrition is the home of the world’s top nutrition coaches, offering many free articles and tips. They have worked with many professional organizations and athletes.
INTERNATIONAL SOCIETY OF SPORTS NUTRITION
www.sportsnutritionsociety.org
The International Society of Sports Nutrition is the only non-profit academic society dedicated to promoting the science and application of evidence-based sports nutrition and supplementation.