Personalized dietary advice

INTERVENTION: The intervention consists of 3 treatments: ‐ a control treatment ‐‐> This treatment is only measured, but does not receive any placebo or intervention, so therefore I have selected the option 'not applicable' in the menu above. ‐ a feedback treatment ‐ A personalized advice treatment The study design will be a randomized and stratified intervention study with a duration of four weeks with three treatment groups. All participants will be subjected to measurements at the start and end of the study regarding health status, food intake (Eetscore), intentions to consume a healthy diet and a range of socio‐psychological variables. The control treatment will only be measured. The feedback treatment receives personal feedback on how well they score on the health measures and on their diet. The advice treatment receives feedback in the same way as the feedback treatment and additionally receives personalized dietary advice on a product category of own choice. CONDITION: Diet, BMI, Blood pressure, Dietary pattern, Abdominal girth ; ; PRIMARY OUTCOME: • Dietary intake; ; • Intentions to consume a healthy diet; ; • Customer experiences and motivations SECONDARY OUTCOME: • Health parameters : ; ; o Body Mass Index (BMI) ; ; o Waist circumference ; ; o Blood pressure ; ; ; ; • Socio‐psychological parameters: ; ; o Perceived self‐efficacy ; ; o Perceived knowledge ; ; o Perceived health ; ; o Perceived healthiness of the diet ; ; ; ; • Food purchases ; INCLUSION CRITERIA: • Having given written informed consent • Having a low level of education (max. MBO 2) • Aged 18 years or over • A customer of Jumbo Almere Geinplein or Jumbo Almere Buiten • Internet access and an e‐mail address to receive reminders. • Master the Dutch language (read and write) • Willing to comply with all study procedures