Radon Research Articles

Evaluation of consumer digital radon measurement devices: a comparative analysis

Kansas State University (KSU) Engineering Extension conducted an abridged evaluation of eight consumer grade digital radon monitors. Using the KSU secondary radon chamber, these devices were exposed to three different radon concentrations for 7 d in average household temperature and relative humidity conditions. The three different radon concentration ranges used were: 12.8 pCi L−1 to 15.5 pCi L−1 (473.6 Bq m−3–573.5 Bq m−3), 27.7 pCi L−1 to 29.4 pCi L−1 (1024.9–10 857.8 Bq m−3), and ambient room level average radon concentration of 0.6 pCi L−1 (22.2 Bq m−3). The American National Standards Institute/American Academy of Radon Scientists and Technologists Performance Specifications for Instrumentation Systems Designed to Measure Radon Gas in Air (ANSI/AARST MS-PC) (ANSI/AARST MS-PC 2022 Performance Specifications for Instrumentation Systems Designed to Measure Radon Gas in Air (AARST Radon Standards)) minimum performance metrics were used to evaluate the accuracy and precision of each model type for each radon concentration tested. The eight different device models performed within the 0 ± 25% requirement for the individual percent error (IPE) for radon concentrations between 27.7 pCi L−1 and 29.4 pCi L−1 (1024.9–10 857.8 Bq m−3). For radon concentrations between 12.8 pCi L−1 and 15.5 pCi L−1 (444–592 Bq m−3) seven of the eight monitors fell within the IPE requirement and for ambient room radon concentrations six of the eight monitors fell within the IPE requirement for the ANSI/AARST MS-PC minimum performance requirement (ANSI/AARST MS-PC 2022 Performance Specifications for Instrumentation Systems Designed to Measure Radon Gas in Air (AARST Radon Standards)) ranges. All eight device models fell within the ± 15% ANSI/AARST MS-PC minimum performance requirement (ANSI/AARST MS-PC 2022 Performance Specifications for Instrumentation Systems Designed to Measure Radon Gas in Air (AARST Radon Standards)) coefficient of variation (CV) range for radon concentrations between 12.8 pCi L−1 and 15.5 pCi L−1 (444–592 Bq m−3) and for radon concentrations between 27.7 pCi L−1 and 29.4 pCi L−1 (1024.9–10 857.8 Bq m−3). In the future, evaluating the performance of these models over time to observe their long term accuracy and precision is anticipated.

Full characterization and calibration of a transfer standard monitor for atmospheric radon measurements

Abstract. In this work, a full characterization of the new user-friendly version of the Atmospheric Radon MONitor (ARMON), used to measure very low activity concentrations of the radioactive radon gas in the outdoor atmosphere, is carried out. The ARMON is based on the electrostatic collection of 218Po+ particles on a semiconductor detector surface. A main advantage of this instrument is that it offers high-resolution alpha-energy spectra, which will allow us to separate radon progeny (210Po, 218Po, and 214Po). The monitor feature may also allow measurements of thoron (220Rn) by collection of 216Po+, although the instrument is not calibrated for this gas. In the paper, the physical principle; the hardware configuration; and the software development of the automatic and remotely controlled ARMON, conceived and constructed within the MAR2EA and the traceRadon projects, are described. The monitor efficiency and its linearity over a wide span of radon concentration activities have been evaluated and tested here using theoretical and experimental approaches. Finally, a complete budget analysis of the total uncertainty of the monitor was also achieved. Results from the application of a simplified theoretical approach show a detection efficiency for 218Po+ of about 0.0075 (Bq m−3)−1 s−1. The experimental approach, consisting of exposing the ARMON at controlled radon concentrations between a few hundreds to a few thousands of becquerels per cubic metre (Bq m−3), gives a detection efficiency for 218Po+ of 0.0057 ± 0.0002 (Bq m−3) s−1. This last value and its independence from the radon levels were also confirmed thanks to a new calibration method which allows us, using low-emanation sources, to obtain controlled radon levels of a few tens of becquerels per cubic metre (Bq m−3). The total uncertainty of the ARMON detection efficiency obtained for hourly radon concentrations above 5 Bq m−3 was lower than 10 % (k= 1). The characteristic limits of the ARMON – being those dependent on the presence of thoron in the sampled air – were also calculated. A detection limit of 0.132 Bq m−3 was estimated in the absence of thoron. At a typical thoron concentration at atmospheric sites of 0.017 min−1, the detection limit was calculated to be 0.3 Bq m−3, but this can be reduced if using a delay volume, obtaining a decision threshold of 0.0045 Bq m−3. Current results may allow us to confirm that the ARMON is suitable to measure low-level radon activity concentrations (1–100 Bq m−3) and to be used as a transfer standard to calibrate secondary atmospheric radon monitors.

Assessment of Indoor Radon Gas Concentration in Latvian Households

Exposure to radon gas in households presents serious health risks, including an increased likelihood of lung cancer. Following the COVID-19 pandemic, the change in individual habits has led to more time spent in indoor environments with remote activities; thus, the need to raise the awareness of air quality in dwellings and to mitigate the exposure of inhabitants to radon has emerged. This study investigated radon gas concentrations in the air of Latvian dwellings. RadTrack2 passive detectors were deployed in a representative sample of households across 106 municipalities of Latvia (98% of the territory), yielding data from 487 households (973 detectors). The data revealed a median radon concentration of 52 Bq/m3 (Q1 and Q3 were 29 and 93 Bq/m3), with the majority of samples (95.6%) falling below the national reference limit of 200 Bq/m3. The building type and presence of a cellar significantly impacted radon levels, with structures lacking cellars and older buildings exhibiting higher concentrations. Mechanical ventilation proved to be more effective in reducing radon levels, compared to natural ventilation. These findings emphasize the necessity of proactive measures to mitigate indoor radon exposure and to ensure the well-being of occupants. Additionally, the dissemination of research data on radon exposure through open-access scientific publications is vital for raising awareness and implementing effective mitigation strategies.

The first investigation on the radiotoxicity risks associated with ingesting radium in drinking water from the Oujda Region-Morocco and some bottled mineral waters

Drinking water is essential to human life. However, it can be polluted by various factors, including radioactive substances such as radon 222Rn and radium 226Ra. Therefore, the determination of their concentrations is important for public health. The aim of this work is to measure the concentration of 226Ra in samples of tap, natural spring and well water taken from different sources in the eastern region of Morocco, as well as in a few samples of bottled mineral water. We used an AlphaGUARD detector with an AlphaKit accessory and an RTM1688-2 to carry out measurements of radon in secular equilibrium with radium. The got results show that the 226Ra activity is less than 0.104 ± 0.023 Bq/L, the Annual Effective Dose (AED)) for adults and children is less than 29.1 ± 4.7 μSv.y−1and 123.8 ± 4.7 μSv.y−1 for infants. The chemical toxicity risk evaluated using the Lifetime Average Daily Dose (LADD) was found less than 0.23 ± 0.05 μgkg−1day−1.The obtained results are reasonable in relation to international guidelines, and do not present any radiological hazard to consumers that could be attributed to the radium and radon in the analyzed water samples.

Erratum: Investigating and Measuring Radon Gas Concentration in Tehran and Alborz Metro Stations

Erratum: Investigating and Measuring Radon Gas Concentration in Tehran and Alborz Metro Stations

Measuring the concentration of radon gas at the College of Dentistry- Al-Iraqia University using (CR-39) detector

In this study, the concentration of radon gas was measured at the College of Dentistry-Al-Iraqia University using a nuclear pathway detector (CR-39). The detector was placed at a distance of 160 cm from the ground level. The detector was exposed to alpha fragments for 30 days. The results showed that the concentration of radon gas has Changed from one site to another. It ranged from the lowest (28.418 Bq/m3) to the highest (233.491 Bq/m3), with an average radon concentration equal to (90.279 Bq/m3). All results were within the permissible limit of a scientist except for one sample A2 in the chemistry laboratory, which was higher than the international permissible limits (200-300 Bq/m3) and recorded by the International Commission on Radiological Protection Statement on Radon.

Assessment of Radon Potential along Local Fault System in Sofia, Bulgaria (at Specific Test Site)

Environmental spread of radon gas (222Rn) has been intensively investigated in the last few years due to its harmful effects on human health. A concept of radon index is used to characterize the geogenic radon potential of the terrain, as the latter gives the probability of the presence of radon gas concentration in a building, the genesis of which is directly related to the influence of the earth's surface. One of the approaches for quantifying the radon index is based on a multivariate cross-tabulation, which includes two parameters – radon concentration in soil gas and gas permeability of the earth layer (at 80 cm). The geology of the specific site (approx. 350 m2) is characterized by the Pliocene clayey-sandy Formation, covered with Quaternary sediments. From tectonic point of view, the site as a part of Sofia Graben, has being subject of events related mainly with the Late Alpine deformations heading to very complex structures and fault systems. In situ measurements performed in the summer of 2023 at ten distinct points at the surface and 11 distinct points at two meters in depth from the surface vary as follows: from 44.2 to 189.0 kBq/m3 (radon soil gas), from 2.0E-11 to 1.8E-13 m2 (soil gas permeability), and from 0.10 to 0.17 µSv/h (gamma dose rate). Based on that, the radon index of the site is determined from “medium” to “high”, with a predominance of the latter. One of the reasons for the high radon potential is the presence of sub-faults connected with the major Sofia fault system and their influence on the radon concentration. Therefore, in future investigations of the radon index, a very detailed survey of the site's geology is needed in the territory with appearing fault systems. In addition, based on the determination of the radon index, the forthcoming construction activities in such areas will be advised to use preventive measures during the construction of the new building to avoid future radon gas influxes on the premises.

Determination Of Heavy Metals and Radon Concentration in Soil and Water Samples from Wadi-B Jere Oil Exploration Sites in Maiduguri, Northeast Nigeria

Radon gas and heavy metals are two significant risk factors that can cause lung cancer. Wadi B, a locality in Jere local government of Borno state, is an area where oil exploration is underway. There is a potential health risk of contamination of the drinking water and soil samples in the area. To investigate radon concentration and heavy metal contamination, several samples of water from wells and boreholes, as well as soil samples, were collected for analysis. The analysis was conducted using liquid scintillation (LSC) and atomic absorption spectrometry. The result of radioactivity analysis using LSC shows that water samples have varying levels of radon concentration ranging from 17.77 Bql-1 to 22.50Bql-1 which exceeded the maximum contaminant levels of 11.1Bq/L set by the USEPA 1999 and the world average value of 10Bq/L set by the World Health Organisation (WHO 2004). The mean annual effective cancer risk of radon intake varied across sampling points, ranging from 0.164, 0.246, 0.287 to 0.130, 0.218, and 0.227 for adults, children, and infants, respectively, with mean values of 0.146, 0.219, and 0.255. The mean values of excess lifetime cancer risk (ELCR) associated with radon inhalation and ingestion for adults, children, and infants were 0.0005110, 0.0007660, and 0.0008930, respectively. Moreover, elevated conductivity and total dissolved solids in water samples suggest potential contamination, exceeding the recommended limits set by the World Health Organization. On the other hand, Heavy metals analysis shows a mean value of ELCR 0.125009 for adults and 0.000063 for infants. Results showed that heavy metal concentrations in soil samples exceeded permissible limits for all metals except chromium and lead, with the order of concentration being Cr < Cd < Pb < Cu < Zn. These findings underscore the need for ongoing monitoring and remediation efforts to mitigate environmental and health risks in Wadi B

Estimation of alpha exposure on CR-39 detector using a UV-VIS spectrophotometer

This work is dedicated to study the possibility of using UV-VIS spectrophotometer, a non-invasive technique with a versatile applications that is being used to determine the optical properties of matter, to estimate the CR-39 exposure to alpha particles. CR-39 detectors were exposed to alpha particles from two different alpha sources: 241Am and radon gas. Tracks densities on CR-39 were determined using the traditional counting method by an optical microscope. The transmittances of CR-39 detectors were measured using UV-VIS spectroscopy in the range of 400–1000 nm, and results were correlated with measured tracks densities. The comparison showed that this method is effective in estimating exposure of CR-39 to alpha particles, and that its efficiency has increased by increasing the etching time of the detectors.

Short Communication: Radon testing via a state tobacco quitline

ObjectiveExposure to radon gas at home is the second largest cause of lung cancer after smoking and dramatically increases smokers’ risk of lung cancer. State tobacco quitlines are uniquely positioned to inform smokers about radon, yet, to our knowledge, none does so. We explored the feasibility of introducing free radon tests via the tobacco quitline in North Dakota, a state with one of the highest radon levels in the U.S. MethodsFive hundred consecutive callers to the ND Quits Tobacco quitline from February 2021 to February 2023 were invited to complete a brief radon questionnaire and receive a free radon test kit. Radon tests were bar-coded so that the return rate of the tests and the radon levels could be determined. ResultsTwo hundred fifty-one (51 %) callers completed the questionnaire and seventy-five radon tests were successfully returned to the laboratory. More than one third of the test results were ≥ 4.0 pCi/L, the action level recommended by the EPA. Only 1 in 5 participants reported knowing that radon caused lung cancer. ConclusionRadon knowledge among ND smokers is poor. Radon test distribution via quitlines is feasible and may be a valuable addition to quitline services, particularly in states with high radon levels.

Radon exhalation and health hazard assessment for various ceramic tiles used in Bangladesh

Objective: Among various building materials, tiles are the most used decorative materials used worldwide. For the safe use of tiles at home and workplace it is required to select them properly based on radiation dose due to radon and gamma emission.
 Experiments: Among various tiles available in the market, 25 different types of tiles were collected for this experiment. Collected tiles are then ground and stored in sealed cans for secular equilibrium. To measure gamma activity due to the radionuclides 226Ra, 232Th, 40K, High Purity Germanium (HPGe) detector was used. To store radon gas emitting from tiles, a big box was used. The activity concentration was then measured by a radon detector (RadonEye) by placing it inside the box.
 Results and discussion: It was observed that 226Ra, 232Th, 40K activity varies from 45 – 89 Bq/Kg, 77 – 110 Bq/Kg, and 321 – 694 Bq/Kg. The radium equivalent activity varies from 198.32 – 280.46 Bq/Kg, less than the recommended value of 370 Bq/Kg set by UNSCEAR (United Nations Scientific Committee on the Effects of Atomic Radiation). The activity concentration of radon varies from 31 – 71 Bq/m3. This is lower than the 300 Bq/m3 recommended by ICRP (International Commission on Radiological Protection). The radon exhalation rate varies from 0.179 – 0.409 Bqm−2h−1. To assess radiological hazards associated with the tiles samples air absorbed dose rate, internal and external hazard index, gamma index, annual indoor and outdoor effective dose rate, and dose due to radon were also calculated.
 Conclusion: Though the estimated values for external and internal hazards are below the recommended values, they may be safe for adults. As children have thinner skin and breathe more air due to high breathing frequency, they may receive more radiation than adults. Moreover, they are at a greater risk because of their developing bodies and long life expectancy post-exposure.

Measurement of Effective Radium Content and Radon Exhalation Rates in Soil Samples of Adigrat, Tigrai Region, Ethiopia

The predominant source of radiation exposure for the global population is natural radiation, originating from radioactive elements present in the Earth's soil, air, and water. These elements, such as uranium, radium, and radon, have existed since the planet's formation. Prolonged exposure, particularly in specific geographic locations, significantly contributes to radiation risks for populations. Exposure routes include inhaling radon gas, ingesting radioactive substances in food and water, and direct exposure to terrestrial gamma radiation. While natural radiation exposure generally remains within safe limits, certain factors can elevate risks, such as geological formations rich in radioactive minerals or proximity to nuclear facilities. Environmental conditions and geological factors can also influence radiation levels, leading to fluctuations in exposure risks. Monitoring and regulating radiation exposure are crucial to prevent surpassing permissible levels, which can result in health hazards like an increased risk of cancer. Effective management requires ongoing research, stringent regulations, and public awareness efforts to mitigate the risks associated with natural radiation exposure and protect public health. Effective radium content and radon exhalation rates in soil samples collected from Adigrat in Tigrai state of Ethiopia were experimentally measured by ‘‘Sealed Can Technique’’ using LR-115 type II plastic track detectors. The values of effective radium content were found to vary from16.11 Bq/kg to 34.24 Bq/kg with an average value of 25.93 Bq/kg and a standard deviation of 6.10. The mass and surface exhalation rate has been found to vary from 1.61x10<sup>-6</sup> Bq kg<sup>-1</sup> d<sup>-1</sup> to 3.42 x10<sup>-6</sup> Bq kg<sup>-1</sup> d<sup>-1</sup> and 0.81x10<sup>-4</sup> Bq m<sup>-2</sup> d<sup>-1</sup> to 1.71x10<sup>-4</sup>Bq m<sup>-2</sup> d<sup>-1</sup>, respectively. The radium content in soil in the study area is below the permissible value of 370 Bq/kg as recommended by Organization for Economic Cooperation and Development.

Counting alpha particles produced by radon daughters using commercial off-the-shelf complementary metal oxide semiconductor (COTS CMOS) image sensors

Radon (Rn-222) is the main source of radiation exposure to human beings from natural radiation; it is of great significance to study the measuring methods and measuring instruments of radon for natural radiation protection. In recent years, the application of pixel detectors in radiation detection has attracted attention. In this paper, a Commercial Off-the-Shelf Complementary Metal Oxide Semiconductor (COTS CMOS) image sensor which replaces the glass for protection covering in front of the sensors was used to perform a series of measurements to identify alpha particles. During the experiment, the CMOS image sensor was used to record a video during the sampling period, and then use the FFmpeg software to take screenshots of the video by frame. MATLAB was used to count bright spots from the image frames. A measurement chamber was designed to measure radon concentrations, and when the relative humidity was constant, the count of alpha particles by the CMOS image sensor increased along with the increase of the concentration. The experiments verified the feasibility of the low-cost COTS CMOS image sensors to monitor radon.

Estimated concentration of Radon in Soil samples collected from Nasiriyah Governorate, Iraq, by using CR-39 detector

In this study, CR-39 detector was used to measure alpha particles emitted from radon gas in fifteen soil samples collected from Nasiriyah Governorate, Iraq. The results indicated that the concentration of radon gas varies from the highest concentration 122.40±19.11Bq m−3 in Bisan area and the lowest concentration of 69.71±17.90Bq m−3 in Hayyal - Muallimeen area, all values are less than the internationally recommended values 200-600 Bq m−3 mentioned by ICRP. Also, the calibration factor for the CR-39 detector was calculated and amounted to be 0.02 (tr.cm 2/Bq m −3 d).

A high-sensitivity radon emanation detector system for future low-background experiments

Radioactive radon atoms originating from the primordial 238U and 232Th decay chains are constantly emanated from the surfaces of most materials. The radon atoms and their radioactive daughter isotopes can significantly contribute to the background of low-background experiments. The 222Rn progeny 214Pb, for example, dominates the background of current liquid xenon-based direct dark matter detectors. We report on a new detector system to quantify the 222Rn surface emanation rate of materials. Using cryogenic physisorption traps, emanated radon atoms are transferred from an independent emanation vessel and concentrated within the dedicated detection vessel. The charged radon daughter isotopes are collected electrostatically on a silicon PIN photodiode to spectrometrically measure the alpha decays of 214Po and 218Po. The overall detection efficiency is ∼ 36 % for both polonium channels. The radon emanation activity of the emanation vessel was measured to be (0.16± 0.03) mBq, resulting in a detection sensitivity of ∼ 0.06 mBq at 90 % C.L.

Assessment of variation of radon gas due to internal dwelling decorated materials in Amasaman District in Greater Accra Region, Ghana

Abstract This study investigates the influence and variation of indoor radon gas due to internally decorated materials in residential buildings within Amasaman District, Accra, using CR-39 techniques. Internal covering used for decorations are wallpaper, wall tiles, gypsum panels, epoxy paints, and oil paints. Statistical analysis of the obtained radon data revealed a positively skewed distribution, suggesting a log-normal distribution of indoor radon data. The indoor radon concentrations across the studied dwellings varied from 27.7 to 287.0 Bqm−3 with a mean value of 116.0 ± 4.4 Bqm−3. The majority of dwellings (54%) exceeded the WHO reference level of 100 Bq/m3, while 92% remained below the lower limit of the international commission on radiological protection (ICRP)-recommended range of 200–600 Bqm−3. These findings emphasize the need for vigilance and proper ventilation practices to mitigate potential health risks. The annual effective dose assessments ranged from 0.7 to 7.2 mSv/y, with an arithmetic mean (AM) of 2.9 ± 0.1 mSv/y which is about 2.6 times greater than the world average value of 1 mSv/y. The excess lifetime cancer risk estimated ranged from 2.4 to 24.9, with an AM of 10.1 ± 0.4. This study reveals variations in indoor radon concentrations, with dwellings having different internal covering materials.

Experience from radon in soil gas comparison measurements held in Czech Republic and in other countries, 1992–2022

Radon 222Rn, an inert natural radioactive gas, a daughter product in the 238U natural decay series, a source of alpha radiation, together with its short-lived decay products is a dominant source of absorbed radiation doses in the population. Rocks and building materials are fundamental sources of radon in dwellings. Elevated indoor radon activity concentration in houses and workplaces, surpassing recommended reference levels, is not desirable. Since radon penetrates into the houses from the geological basement, various technical aids for protection of houses have been developed. Their individual application derives from the radon potential of a building site. Radon risk mapping of building sites became a standard procedure for gauging the local radon potential. Various instruments and techniques of measurements of radon activity concentration in soil gas (Bq/m3) at building sites are available. Since radon in soil gas and radon measurement techniques are affected by several natural and technical conditions, resultant values of radon risk mapping by individual organizations vary, sometimes fundamentally. Radon comparison measurements at selected reference sites are an important tool for single organizations to verify their radon measuring procedures and reliability of their reported results. Based on legislative regulations, comparison measurements at established radon reference sites are a part of the obligatory activities for radon risk mapping at building sites in the Czech Republic. Experience and analyses of 30-year radon in soil gas comparison measurements in the Czech Republic show the dispersion of values reported by participating organizations and indicate that more than 10% of participants do not fulfill the established local criteria. This paper introduces requirements for the establishment of radon reference sites, documents their natural variability, recommends the procedure of radon comparison measurement, and analyses its results. A long-term experience was gained by testing organizations from the Czech Republic (1992–2022) as well as from the international comparison measurements organized in the Czech Republic and in several other countries (2010–2021).

Radon Gas and Possible Concentration Mitigation Solutions inside Residential Buildings in Yemen’s Climatic Environmental Conditions

يهدف البحث إلى : إلقاء الضوء على مصادر غاز الرادون الطبيعية , والطرق المختلفة للحد من مخاطره على الإنسان في بيئته المنزلية .وقد اشتمل البحث على المحاور التالية : المقدمة – غاز الرادون ومصادره الطبيعية – العوامل المؤثرة على تركيز غاز الرادون في الطبيعة – مستويات غاز الرادون في اليمن – تركيز غاز الرادون في المنازل – طرق تخفيض غاز الرادون في المباني- تحليل بعض المباني القائمة في اليمن – الخاتمة . وقد توصل البحث إلى مجموعة من النتائج أهمها : أن غاز الرادون يحظى باهتمام عالمي متزايد كونه السبب الثاني لمرض سرطان الرئة .

Investigation of Radon, Total Electron Content and Linear and Nonlinear Variations of Meteorological Variables Due to Earthquakes: ARIMA and Monte Carlo Modelling

An Integrated Autoregressive Moving Average (ARIMA) - Monte Carlo Simulation (MCS) is proposed to analyze and model the anomalies of atmospheric and ground gases by an earthquake along the North Anatolian Fault Zone (Türkiye). Earthquakes, Soil radon gas and Total Electron Content (TEC) showed simultaneous anomalies. There are positive relationships between these three parameters. Also, positive relations between Rn, meteorology, and atmosphere are detected. The proposed ARIMA model and MCS for the Rn-TEC-Earthquake relationships of the measured data gave statistically significant results. This model and simulation showed statistically significant changes in the effects of microearthquakes, which are more difficult to detect than large earthquakes, especially on the ionospheric TEC.

A Review on Lung Cancer with Emphasis on Current Treatment

Cancer is a broad term that refers to more than 277 types of cancer. It is a disease that results from a variety of causes, including mutations resulting from oncogene activation, tumor suppressor gene failure, or other factors. Mutations in these genes cause abnormal cell growth. Lung cancer is one of the leading causes of cancer in the world. Lung cancer, also known as lung cancer, is a lung disease caused by the uncontrolled growth of cells in tissues. Risk factors include smoking , exposure to radon gas, asbestos, secondhand smoke, and pollution. The two types of lung cancer are small cell lung cancer (SCLS) and non-small cell lung cancer (NSCLS). Common symptoms include cough, hemoptysis, weight loss, fatigue, fever or clubbing, hypercalcemia, myasthenic syndrome (muscle fatigue), and changes. Lung cancer is classified by histological type and stage using TNM (tumor, tumour, and metastasis). Treatment depends on the type of cancer and includes surgery, radiation and chemotherapy. Long-term intake of vitamin A, vitamin D, or vitamin E does not reduce the risk of lung cancer. Consuming more vegetables and fruits will reduce the risk. There is no clear link between diet and lung cancer. Most patients with advanced NSCLC who respond to surgery are treated with adjuvant chemotherapy. Histological diagnosis can be made by sputum cytology, thoracentesis, access to lymph nodes, bronchoscopy, transthoracic needle aspiration, video-assisted thoracoscopy or thoracotomy. Initial evaluation of metastatic disease is based on history and physical examination, chest examination, computed tomography, PET scan, and clear tissue of mediastinal involvement. Despite the interest in screening among scientists and doctors, there is no major organization recommending screening for early detection of lung cancer. Smoking is still an important part of primary prevention.