A Research Study to See How NNC0487-0111 Affects the Body's Energy Use After a Weight Loss in Adults Living With Obesity, Compared to a Low-calorie Diet or Placebo

Inclusion Criteria: * Male or female (sex assigned at birth, inclusive of all gender identities). * Age 18 years or older at the time of signing the informed consent. Exclusion Criteria: * Female who is pregnant, breast-feeding or intends to become pregnant or is of childbearing potential and not using highly effective contraceptive method. * Exposure to an investigational medicinal product before screening. * Any condition, or disorder, which in the investigator's opinion might jeopardise participant's safety or compliance with the protocol. * Anticipated change in lifestyle (e.g., eating, exercise or sleeping pattern) during the study, for example, an imminent job change to/from a physically demanding occupation. * Claustrophobia or severe discomfort of being confined in small rooms. * History of type 1 or type 2 diabetes mellitus. * Presence or history of any clinically relevant respiratory, metabolic, renal, hepatic, cardiovascular, gastrointestinal (GI), or endocrinological conditions. * Unusual meal habits (including, but not limited to, eating disorders) and special diet requirements or unwillingness to eat the food provided in the study. * Use of any weight lowering pharmacotherapy or pharmacotherapy that may cause weight gain, including systemic corticosteroids (except for a short course of treatment, i.e., 7-10 days), tri-cyclic antidepressants, atypical antipsychotic and mood stabilisers prior to screening. * Use of incretin or amylin-based therapies prior to screening or previous discontinuation of long-term incretin and/or amylin-based therapy due to tolerability issue. * Physical activity of moderate to vigorous intensity for greater than (\>) 4 hours/week within the past 6 months before screening.