👉 Photoinhibition is a phenomenon in which light, or photons, cause an organism to produce less energy. This can happen when the body receives too much light, leading to cellular damage and eventually death. For example, if you have been exposed to excessive amounts of light for long periods, your cells may become damaged by the excess light, leading to a decrease in their ability to generate ATP (adenosine triphosphate), which is the energy currency used by cells to carry out various functions,