The effectiveness of a social media intervention for reducing portion sizes in young adults and adolescents.

Objective: Adolescents and young adults select larger portions of energy-dense food than recommended. The majority of young people have a social media profile, and peer influence on social media may moderate the size of portions selected.

Methods: Two pilot interventions examined whether exposure to images of peers' portions of high-energy-dense (HED) snacks and sugar-sweetened beverages (SSBs) on social media (Instagram) would influence reported desired portions selected on a survey.

Using pictorial nudges of fruit and vegetables on tableware to increase children's fruit and vegetable consumption.

Children's fruit and vegetable consumption is lower than recommended. Increasing consumption is important for children's health. Nudges influence children's eating behaviour, but less is known about the influence of a pictorial nudge on tableware on children's fruit and vegetable consumption.