Inclusion Criteria:  BMI 30-44.9 kg / m2 BMI 28-29.9 kg / m2 and hypertension BMI 28-29.9 kg / m2 and prediabetes BMI 28-29.9 kg / m2 and type 2 diabetes BMI 28-29.9 kg / m2 and coronary heart disease BMI 28-29.9 kg / m2 and hyperlipidemia BMI 28-29.9 kg / m2 and hepatic steatosis BMI 28-29.9 kg / m2 and sleep apnea BMI 28-29.9 kg / m2 and polycystic ovary syndrome  Exclusion Criteria:  Severe mental illness Ongoing or suspected eating disorder Pregnancy Breastfeeding Cancer in active treatment Use of drugs for weight loss Weight loss treatment during the past 6 months Active abuse of alcohol or drugs Not being able to express themselves in Swedish in speech and writing If the study supervisor deems that participation in the study is inappropriate for another reason.