| CPC A61D 19/00 (2013.01) [A61N 5/0613 (2013.01); A61N 2005/0662 (2013.01)] | 6 Claims |

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1. A method of improving a reproductive potential of a male mammal excluding a human, the method comprising:
irradiating the male mammal excluding the human with an ultra-weak photon having a wavelength of 380 nm (nanometer) to 870 nm, a centroid wavelength of 676.10 nm, by using a LED (light-emitting diode) light source having an irradiance of 10−18 W/cm2 (Watts per square centimeter) to 10−13 W/cm2, a lumen maintenance rate of 90%, and a luminous efficiency of 85 lm/W (lumen per Watt), at a distance of 1 m to 5 m from the male mammal; wherein the ultra-weak photon is irradiated for 24 hours a day.
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