A recent study published in BMC Nutrition described the association between nutritional myths and metabolic control in adolescents and young adults with type 1 diabetes mellitus (T1DM).
Health-related myths influence treatment adherence and dietary behavior in patients with T1DM. The study aimed to determine the impact of knowledge improvement about nutritional myths in T1DM.
A total of 190 adolescents and young adults with T1DM were included. Data on HbA1c values, demographics, nutrition-related myths, and BMI were collected using face-to-face interviews. Chi-square tests and Spearman correlation coefficients were performed using SPSS 22.0 software. The researchers  performed logistic regression analysis to identify independent predictors of metabolic control status (p < 0.05).
With a mean HbA1c of 7.9 ± 1.44%, participants had a mean diabetes duration of 7.5 ± 4.63 years. Twenty percent of young adults and 27% of adolescents were overweight. Good metabolic control (HbA1c <7%) was  in only 29.0% of individuals and HbA1c ≥ 7 was reported in the remaining patients. An increase in the duration of diabetes increases the risk of poor metabolic control by 1.107 times. 
The study reported a reduction in the risk of poor metabolic control with increased nutrition language (OR: 0.696).