This intervention aims to reduce obesity by using new type of nutritional and lifestyle therapy and in parallel, tailored persuasive information and communications technology (ICT)-technology based application. The study hypothesis is that obesity cannot be reduced just by distributing nutritional information. Instead, by influencing also the eating behavior, permanent lifestyle changes can be achieved. The effect of the therapy along the time-line, the health information literacy of the study persons and the changes in it will be studied at different phases of the intervention. The research will be carried out in three main groups of different levels of nutritional therapies with a parallel ICT-intervention and control group for each main group (altogether six groups).
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Weight change
Timeframe: Baseline, 1 , 2 and 5 years