A Study to Evaluate Effect of AZD6234 in Adult Participants With Obesity or Overweight With Weight-related Comorbidity Without Type 2 Diabetes Mellitus

Inclusion Criteria: * Males \& females (inclusive of all gender identities) age ≥18 years * BMI ≥30 kg/m2 OR BMI ≥27 kg/m2 with at least one of the following weight related comorbidities (treated or untreated): hypertension, dyslipidaemia, obstructive sleep apnoea, cardiovascular disease, heart failure, chronic kidney disease, metabolic dysfunction-associated steatotic liver disease, osteoarthritis of the knee, or stress urinary incontinence * Stable body weight (≤5% body weight change) for at least 3 months prior to Randomisation * History of at least one self-reported unsuccessful attempt to lose body weight in their lifetime Exclusion Criteria: * Obesity primarily caused by other endocrine disorders * History of Type 1 or Type 2 Diabetes Mellitus, HbA1c ≥6.5% (48 mmol/mol), and/or treatment with glucose-lowering agent(s) within 3 months prior to Screening * Significant hepatobiliary disease and/or any of the following results at Screening: * ALT ≥ 3.0 × ULN * AST ≥ 3.0 × ULN * TBL \> 1.5 × ULN (except for cases of known Gilbert's Syndrome) * Has received treatment with a GLP-1 receptor agonist or GLP-1 containing medication for any indication within 3 months before Randomisation.