Are obese: have a BMI of \>30 kg/m2 or BMI \>27 kg/m2 and waist circumference \>88 cm (women) or \>102 cm (men)
Living independently (not in a health facility)
The willingness that the general practitioner will be notified of study participation
Written informed consent
Willingness to comply with the protocol
Consent of the study physician
You may not be if
Inability to understand the Dutch language
Cognitive impairment (MMSE \<15)
Use of total or partial parenteral nutrition (TPN)
Alcohol or drug abuse in the opinion of the investigator
Current enrolment in a fixed rehabilitation program or other intervention studies
Palliative treatment or a life expectancy of ≤ 3 months
Following a vegetarian or vegan (100% plant-based) diet
Bariatric surgery
Active medical treatment interfering with this intervention (e.g. weight loss medication as Ozempic, cancer patients receiving systemic and immune therapy)
Physical disabled: unable to meet the general daily exercise guideline for adults
Planned a holiday during the intervention period and is unable to attend group- or individual sessions for \> 3 weeks
Diagnosed with unstable coronary heart disease (CHD), decompensated heart failure, uncontrolled hypertension or uncontrolled arrhythmias (e.g. heart failure NYHA \>3)
