PRE-Pregnancy Weight Loss And the Reducing Effect on CHILDhood Overweight - Aarhus

Inclusion criteria

• Maternal pre-pregnancy BMI 27.0-44.9 kg/m\^2
• Maternal age range 18-38 years
• Connected to Aarhus University Hospital as place of birth
• Pregnant
• Paternal Inclusion Criteria:
• Paternal pre-pregnancy BMI 18.5-44.9 kg/m\^2
• Paternal age range 18-55 years
• Parental Inclusion Criteria:
• Couples (male and female)
• Planning pregnancy within 3 years
• Provided voluntary informed consent
• Danish or English speaking
• Intention to permit the planned offspring to participate in the follow-up study
• Able to store biological samples from the offspring at home in the freezer in a box given by the study personnel
• Parental

Exclusion criteria

• Diabetes mellitus (Type 1 or 2)
• Previous or present eating disorder
• Allergy towards ingredients in the very low calorie diet products
• Severe heart, liver or kidney disease
• Conception by in vitro fertilization
• Any medical condition or concomitant medication as judged by the medical responsible
• Adherence to vegan diets or other diets interfering with the dietary guidelines in the study
• Participation in other clinical trial that can affect the results of the current study
• Engagement in elite sports or similar strenuous exercise ≥5 h/week at inclusion
• Blood donation or transfusion within the past month before screening
• Blood donation during the study
• Inability or unwillingness to follow the study protocol and instructions given by the study personnel
• A detailed description of the exclusion criteria is given below:
• Medical conditions as known by the participant:
• Diabetes mellitus (type 1 and 2)
• History or diagnosis of eating disorder (e.g. restrained eating, disinhibition, emotional eating)
• Any significant medical condition as assessed by the investigator (e.g. dysregulated thyroid disease or reproductive diseases)
• Any significant psychiatric disorder (i.e. schizophrenia, bipolar disease or depression) as assessed by the investigator
• Severe chronic heart, liver and kidney disease
• Polycystic ovary syndrome with irregular cycle
• Medication:
• Current use of medication or use within the previous three months with a potential to affect body weight or pregnancy as judged by the investigator (e.g. systemic corticoids)
• Personal/other:
• Severe food allergies, food intolerances or dislike expected to interfere with the study, including allergy towards ingredients in the VLCD products
• Engagement in elite sports or similar strenuous exercise ≥5 h/week
• Blood donation or transfusion within the past month before screening
• Planned blood donation for other purpose than this study during participation
• Alcohol abuse, as judged by the investigator, within the previous 12 months
• Drug abuse, as judged by the investigator, within the previous 12 months
• Psychological or behavioral problems which, in the judgement of the investigator, would lead to difficulty in complying with the study protocol
• Participation in other clinical trials within the past three months or intention to do so during the study, which are judged by the investigator to affect the present study
• Unable to consume the interventional product for religious reasons, swallowing disorders, other physiological reasons or any other reasons for not being able to follow the recommended diet
• Inability or unwillingness to give written informed consent or communicate with study personnel
• Inability or unwillingness to follow the study protocol and instructions given by the study personnel
• Illiteracy or inadequate understanding of Danish or English language.
• Any other condition that judged by the investigator may interfere with the adherence to the study protocol