“…All the biological systems, including humans, send ultra-weak photon emission (UPE) to their surroundings [1], and spontaneous ultra-weak photon emission is generated from the relaxation of electronically excited species formed during oxidative metabolic processes [2][3][4][5].Ultra-weak photon emission is a common phenomenon and carries information about its generating processes, and closely related to photosynthesis, lipid per-oxidation, catabolism, free radical reactions, radiation effects, detoxification and carcinogenic effects, aging and death process [6]. There has been a lot of evidence that the features of UPE including intensity, spectral distribution, photon count distribution, photon spatial distribution, and photon statistical properties contain and carry information about the biological systems that result in its production [7].…”