Those whose adherence was 25 or more days per month reported an average monthly weight loss of two pounds or roughly one kg, and those who stayed in the programme at least three months and completed at least two follow-up surveys lost on average one percent of their initial weight.
Common barriers that prevented people from making changes included personally unsuitable tips, forgetting, being too busy, unusual circumstances such as vacations and emotional eating, according to the study.
"These results confirm that small, consistent changes in our daily eating behaviour can result in gradual weight loss and in developing healthier eating habits," said Wansink, marketing professor at Cornell's Dyson School of Applied Economics and Management.
