The consequences of atomic bombings of Japan are far-reaching and have mostly long-term effects. The first option offered is a long-term effect, since it takes at least a few years or decades for the occurrence of mental illness in future generations. A sudden increase in and development of leukemia can occur in the short term, especially due to radiation, but overall the consequences are seen as long-term, as their appearance and development does not stop soon after the bombing, on the contrary, continues through generations. Increased ability for future generations to have birth defects is also a long-term consequence, as it relates to future generations, does not end in a few years.
The only short-term consequence is the inability to undergo X rays, because of the amount of radiation that already exists in the human body.