Detailed protocol for the intervention group: Dietary guidance in the intervention group is based on the Nordic and Finnish nutrition recommendations and they emphasize appropriate energy intake, meal frequency, consumption of fruits vegetables and berriers, quality of dieatry fat and cardohydrates, including sugar and fiber intake. During the intervention the goals for nutrient and food intake (healthy diet) are: Vegetables, fruits and berries >= 500 g/day, carbohydrates 45-60 E%, sucrose < 10 E%, fiber >=35 g/day, fat 25-40 E%, saturated fat < 10 E%, unsaturated fat >= 2/3 of total fat E%, monosaturated fat 10-20 E%, polysaturated fat 5-10 E%, n-3 fatty acids >= 1E%. The goal for physical activity is brisk walking a minimum of 30 min/day at least five days a week. Walking could be replaced by other types of exercise (e.g. cycling, crioss-country skiing, resistance training, and housework such as leaft raking);