Thoughout the study the subjects in the intervention groups will be regularly contacted by the researchers via the website in order to ensure that the subjects stay active regarding the intervention. The web portal also enables the distribution of material and makes virtual discussion possible between the participants and clinical nutritionists. Printed material and discussions by phone will be provided to the participants who do not have access to the internet. In order to help the participants recognize their needs for changes in the diet, available tests (e.g. fiber test, sugar test, fat quality test) provided by the Finnish Heart Association and the Finnish Diabetes Association will be used.