Academy of Nutrition and Dietetics : From the site, "The Academy of Nutrition and Dietetics is the world's largest organization of food and nutrition professionals."
American Society for Nutrition: From the site, "Through excellence in nutrition research and practice, ASN’s members enhance scientific knowledge and quality of life. The Society supports its members and fulfills its mission by fostering and enhancing research in animal and human nutrition; providing opportunities for sharing, disseminating, and archiving peer-reviewed nutrition research results (at its annual meeting and in its official publications); fostering quality education and training in nutrition; upholding standards for ethical behavior in research, the protection of human subjects, and the care and treatment of research animals; providing opportunities for fellowship and support among nutritionists; and bringing scientific knowledge to bear on nutrition issues through communication and influence in the public domain."
American College of Nutrition: From the site, "We stimulate nutrition research and publication, elevate nutrition knowledge among clinicians and researchers, and provide practical guidance on clinical nutrition. We accept no funding from for-profit corporations, reinforcing our commitment to advancing the science without compromise."
Society for Nutrition Education and Behavior: "The Society for Nutrition Education and Behavior (SNEB) represents the unique professional interests of nutrition educators worldwide."
Phenol-Explorer - Database on polyphenol content in food.
Centre for Evidence-Based Medicine - Critical Appraisal Tools - "Critical appraisal worksheets to help you appraise the reliability, importance and applicability of clinical evidence."