The present disclosure relates to nutritional compositions including a protein equivalent source that includes a peptide component comprising selected peptides. The protein equivalent source may further include intact protein, hydrolyzed protein, including partially hydrolyzed protein, or combinations thereof. The disclosure further relates to methods of promoting healthy body weight in a target subject by stimulating adiponectin levels by providing the nutritional compositions disclosed herein to a target subject, which includes a pediatric subject.本發明關於包含蛋白質等效來源(其包括含有選定之肽類的肽組分)之營養組成物。該蛋白質等效來源可進一步包括完整蛋白質、水解蛋白質(包括部分水解蛋白質)或彼等之組合。本發明進一步關於經由提供本文所揭示之該營養組成物予目標個體(其包括兒科個體)來刺激脂聯素(adiponectin)數量以促進目標個體之健康體重的方法。