When the atomic bomb exploded in the city of Hiroshima, the girl was exposed to about 175 roentgens(R) of gamma rays of radiation. She subsequently suffered from A-bomb sickness with extensive hair loss on her head. After an exposure of about 100 R to 200 R, the usual symptoms of anorexia, malaise, hair loss, diarrhea, and bleeding tendency appeared, but were not as severe. Hair growth resumed about two months later.
After the bombing of Hiroshima, many citizens suffered from radiation sickness. Sadly, the citizens of Hiroshima did not yet know how to handle radiation exposure. After the explosion of the current bomb, Hiroshima and Nagasaki cities resembled deserts with a few buildings left standing.
Many Hibakusha who survived the explosion of the atomic bombs died mainly from radiation damage. However, medical personnel considered vomiting and diarrhea to be signs of dysentery and other infectious diseases. The first officially announced victim of radiation sickness was Midori Naka, an actress who survived the explosion of the atomic bomb in Hiroshima City. Afterwards, she began to search for a serious way to treat radiation damage. In the first few days after the tragedy, tens of thousands of people died of severe radiation exposure after the atomic bomb exploded in the city of Hiroshima.
Those who survived rebuilt their homes again in the same places they had lived before. The radioactive contamination caused many diseases in the survivors of both cities and genetic mutations in children born a little later. Exposure to radiation increased the risk of cancer to have a significant radioactive radiation. In total, about 100,000 survivors participated in the screening. From the information received, it was possible to assess the effects of radiation and to calculate the dose received by each according to the distance from the center of the explosion. Among the survivors who received moderate doses of radiation, cancer occurred in about 10% of cases. Closer to the hypocenter, the oncological risk increased by about 44%. Life expectancy was shortened by about 1.3 years due to exposure to high doses of radiation.
Exposure of the whole body to radiation doses in the range of about 100 to 250 R causes some disease, but is not fatal. These doses were received in the cities of Hiroshima and Nagasaki, especially at some distance from the hypocenter; of the approximately 250 survivors accidentally exposed to fallout in the Marshall Islands after the detonation of the hydrogen bomb on March 1, 1954, about 64 received radiation doses in the range of about 100 to 250 R. The exposure of the Marshall Islands residents lasted about 45 hours, suggesting that it was not strictly of the acute type, as arbitrarily defined. However, more than half of the radiation doses were received within 24 hours, and the effects were expected from the same amount of acute exposure.
Illnesses attributed to radiation doses in the range of about 100 to 250 roentgens have a less rapid onset and less prominent symptoms. The overall picture was similar to that of the more heavily exposed cases. Nausea, vomiting, and diarrhea are usually seen about the first day after exposure. This was followed by an incubation period of more than two weeks, during which time the patients were free of incapacitating illnesses and able to continue their normal lives. Thereafter, the usual symptoms such as anorexia, malaise, alopecia, diarrhea, and bleeding tendency appear but are not as serious. The change in blood properties associated with radiation injury became more pronounced during the incubation period and persisted for some time. If there are no complications from other trauma or infection, recovery occurs in almost all cases, and hair growth resumes after about two months. In general, the more severe the initial stage of radiation injury, the longer and more difficult it will be. In addition, with antibiotics and proper treatment, recovery of more severe disorders was also expected.
