Around thirty thousand adults (18 years old and older) will be recruited from 22 different countries (i.e. including Bosnia and Herzegovina, Colombia, Croatia, Denmark, Egypt, Germany, Greece, India, Ireland, Italy, Kosovo, Kuwait, Lithuania, Montenegro, North Macedonia, Poland, Portugal, Serbia, Slovenia, Spain, Turkey and United Kingdom). A self-administered web-based questionnaire with questions aimed at assessing the dietary behaviours of the adult population during the COVID-19 confinement and before it started, will be distributed using social media and snowball sampling. The questionnaire is based on 44 items including socio-demographic data, MEditerranean Diet Adherence Screener (MEDAS) as a reference of a healthy diet, processed foods intake, changes in their usual food choices and weight gain. All data will be collected online to reach the largest number of participants from all territories.~The main objectives of this study are: 1) to examine whether the COVID-19 outbreak confinement has influenced eating habits among the adult population from the 22 countries previously detailed, and 2) to assess the differences in eating behaviours between the countries involved in the study to have a global overview of the behaviour in the face of confinement that helps in public health decision making related to positive impact on the prevention of chronic diseases and COVID-19-related complications.
This cross-sectional study will allow to collect eating behaviours data during the COVID-19 confinement, some of them related to the Mediterranean Diet to better understand the eating behaviours of adult population during this novel and exceptional situation.~Hypothesis: The eating habits of the population together with physical activity level will change during the COVID-19 outbreak confinement.