What is the most common source of artificial radiation exposure?

Medical radiation is considered the most common source of artificial radiation exposure because it encompasses a wide array of diagnostic and therapeutic procedures that utilize ionizing radiation. This includes X-rays, CT scans, and radiation therapy for cancer treatment. The frequency of medical procedures that involve radiation has increased significantly over the years, leading to a considerable rise in the population's exposure.

Patients routinely receive imaging tests, and while these medical benefits are vital for diagnosis and treatment, they account for the majority of artificial radiation exposure in the general public. Compared to other sources like the nuclear fuel cycle, which is predominantly relevant to specific industries and contexts, or consumer products that may emit low levels of radiation but are less prevalent, medical applications represent a much broader and more common scenario for exposure. Atomic weapon fallout, while significant historically, is less of a concern in terms of ongoing exposure for the general population today. Thus, medical radiation stands out as the primary contributor to artificial radiation exposure faced by individuals.