PROBLEM TO BE SOLVED: To provide protein glycation reaction materials and the like that contain as an active ingredient such an extract of a natural material found to be able to inhibit a protein glycation reaction that has been shown in recent years, to be involved in aging phenomena, dementia, cancer, hypertension, arteriosclerosis, and the like.SOLUTION: In order to solve the problem, a protein glycation reaction material containing Kaempheria parviflora extract as an active ingredient is provided. Foods, food additives, pharmaceuticals, quasi drugs, and cosmetics containing the protein glycation reaction material are also provided.SELECTED DRAWING: Figure 3