A nutritional composition is provided which has an effective prophylactic and/or improving effect for various symptoms of muscle mass decrease, decreased basal metabolism, low body temperature, suppression of obesity, suppression of visceral fat accumulation, hyperglycemia, hyperlipidemia and the like in elderly people. The nutritional composition can include n-3 fatty acid and one or more of free lysine, dipeptides containing lysine, and lysine salts, wherein the content of free lysine, dipeptides containing lysine, and/or lysine salts is 0.1 g-10.0 g per 100 kcal of the composition, and the content of the total amount of n-3 fatty acid is 0.17 g-5.00 g per 100 kcal of the composition.
