Method of improving reproductive ability

A method of prolonging a reproductive ability in a patient in need thereof, comprising:

• preparing a fermented papaya preparation by:
• fermenting immature fruit of Carica papaya Linn with sugar and/or edible yeast fungi, and
• adding a vehicle, a binder, or a lubricant to form the fermented papaya preparation in a form of granules, powder or fine granules, and
• administering an effective dose of the fermented papaya preparation to the patient,
• wherein the effective dose is 0.5 to 6 g/day with respect to an adult having a body weight of 70 kg,
• the reproductive ability involves function of reproductive cells or germ cells, and
• the patient excludes a diabetic patient.