Behavioral control is an important predictor of soy intake in adults in the USA concerned about diabetes.

The primary objective of this study was to determine the variables associated with intention to consume soy products and identify key variables that could be used as targets in soy nutrition education and consumption promotion. A pre/post-test survey was used during a three session class focused on diabetes that discussed and introduced soy foods. The Theory of Planned Behavior framed the questions and variables examined. Subjective norms and behavioral control were most important in predicting intention to consume soy foods. Specifically, health experts and providers were important subjective norms; accessibility and ability to prepare were key behavioural control determinants. While most participants tried soy during the program, taste and texture perceptions did not impact intention to buy soy in adults concerned about diabetes.