UV sterilizing lamps are effective in killing Helicobacter pylori, especially in the case of direct irradiation. Ultraviolet light (especially ultraviolet C, UVC, with wavelengths between 200 and 275 nanometers) destroys the DNA or RNA of microorganisms, thus preventing them from replicating and achieving a sterilizing effect.

Although Helicobacter pylori is primarily found in the human stomach, it can be reduced or eliminated by UV sterilization if it is present on dishes or other surfaces. However, it is important to note that UV light only kills a portion of the microorganisms that are directly exposed. If the H. pylori bacteria are located behind shaded areas of objects or other coverings, the UV light may not be able to reach these areas, so there may still be surviving bacteria. In addition, the effectiveness of UV sterilizing lamps depends on factors such as the intensity of the lamp, the distance, and the duration of exposure.

To improve disinfection, it is sometimes recommended to use a sterilizer that combines other disinfection methods, such as UV plus ozone, which increases the comprehensiveness of the disinfection and ensures that disinfection is achieved even in areas that are not reached by UV light. Overall, UV disinfection lamps can be used as an effective disinfection tool to help kill H. pylori, but it is best to use them in combination with other disinfection measures to ensure complete elimination of the bacteria.