Assessing Dietary Intake of Selected Food Components Using Short Questionnaires

Inclusion criteria: * Willingness to participate in the study. * Signed Statement of Informed and Voluntary Consent to Participate in the Study. * Age between 18 and 65 years at the time of enrolment in the study. * Willingness to comply with all study procedures and to keep a dietary record in accordance with the provided instructions. Exclusion criteria: * Pregnancy or breastfeeding. * Specific dietary practices followed by a small proportion of the population (veganism, LCHF, calorie-restricted diets; note: vegetarians are not excluded). * Diets prescribed by medical professionals. * Mental incapacity that prevents adequate understanding or participation. Reasons for excluding a participant during the study: * Inability to participate in the study * Wishes to discontinue participation * Incomplete data provided