To provide a composition having a joint function improving action, a cholesterol reducing action, a blood sugar reducing action and diastolic blood pressure lowering action.SOLUTION : The present invention provides a composition containing a decomposition product obtained by decomposing a comb with protease. In the composition, the decomposition product contains a low molecular hyaluronic acid with a molecular weight of 380-5000. The total content of free amino acids is 2% by mass or more by mass ratio to the total amount of the composition, and the total content of protein is 2 mass% or more by mass ratio to the total amount of the composition.SELECTED DRAWING : None