Effect of a Protein Supplementation on Body Weight and Metabolic Variables in Overweight and Obese Patients

Inclusion Criteria: * Age 25-35 years old, no gender restrictions * Body mass index (BMI) ≥ 24 kg/m² * Voluntary consent and signed informed consent form Exclusion Criteria: * Age \< 25 years or \> 35 years * Current use of medications that may affect weight or energy balance (e.g., lipid-lowering drugs, antidiabetic drugs, appetite suppressants), or other protein supplements * Presence of acute or chronic viral hepatitis, abnormal liver function (ALT or/and AST \> 3 times the upper limit of normal), kidney disease (serum creatinine \> upper limit of normal), diabetes, malignant tumors, or cardiovascular diseases * Gastrointestinal disorders that affect food digestion and absorption (e.g., chronic diarrhea, constipation, severe gastrointestinal inflammation, active peptic ulcer disease, post-gastrointestinal surgery) * Psychiatric disorders * Allergies to product ingredients or presence of inborn metabolic disorders * Pregnancy or lactation * Other conditions deemed unsuitable for participation in the study by the researchers (e.g., severe diseases not listed in the exclusion criteria)