Norwegian, Swedish and Dutch researchers examining a large Norwegian population-based cohort recently reported in European Journal of Nutrition that daily maternal intake of sweetened carbonated beverages (SCB) in pregnancy was associated with an increase in ADHD symptoms among offspring at 8 years of age. The magnitude of associations in the study was weak (typically 15-21% increased relative risk of offspring having 6 or more ADHD symptoms), suggesting SCB only play a minor role in the aetiology of ADHD. However, further research into causal agents is warranted...