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This study focuses on analysing the heights of 10,953 Korean men aged 20 to 40 years who were measured during the Joseon dynasty, the Japanese colonialisation period, and the contemporary period, the latter including both North and South Korea. This study thus provides rare long-term statistical evidence on how biological living standards have developed over several centuries, encompassing Confucianism, colonialism, capitalism, and communism. Using error bar analysis of heights for each historical sample period, this study confirms that heights rose as economic performance improved. For instance, economically poorer North Koreans were expectedly shorter, by about 6 cm, than their peers living in the developed South. Similarly, premodern inhabitants of present-day South Korea, who produced a gross domestic product (GDP) per capita below the world average, were about 4 cm shorter than contemporary South Koreans, who have a mean income above the world average. Along similar lines, North Koreans, who have a GDP per capita akin to that of the premodern Joseon dynasty, have not improved much in height. On the contrary, mean heights of North Koreans were even slightly below (by about 2.4 cm) heights of Joseon dynasty Koreans. All in all, the heights follow a U-shaped pattern across time, wherein heights were lowest during the colonial era. Heights bounced back to Joseon dynasty levels during the interwar period, a time period where South Korea benefitted from international aid, only to rise again and surpass even premodern levels under South Korea's flourishing market economy.

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Archaeoentomological investigations were conducted on soil contents from a grave belonging to the Joseon Dynasty as part of the Urban Environment Maintenance Project (UEMP) in Cheongjin 12-16 dong (districts), Jongno-gu, Seoul, Korea, from December 01, 2008 to February 19, 2011. A total of 28 insect puparia with hard shells of the common green bottle fly Lucilia sericata were identified in the soil. Evidence suggested that the corpse was placed outside for some days instead of being buried immediately after death. This is the first report of fly puparia in soil samples from a tomb of the Joseon Dynasty during 16-17 AD in Korea. Our findings may help determine the timeframe of burial and offer archaeological insights into the funerary customs of the period.

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A three-dimensional (3D) segmentation and model reconstruction is a specialized tool to reveal spatial interrelationship between multiple internal organs by generating images without overlapping structures. This technique can also be applicable to mummy studies, but related reports have so far been very rare. In this study, we applied 3D segmentation and model reconstruction to computed tomography images of a Korean mummy with congenital diaphragmatic hernia. As originally revealed by the autopsy in 2013, the current 3D reconstruction reveals that the mummy's heart is shifted to the left due to the liver pushing up to thoracic cavity thorough diaphragmatic hernial defect. We can generate 3D images by calling up the data exclusively from mummy's target organs, thus minimizing the confusion of diagnosis that could be caused by overlapping organs.

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King Yeongjo, the 21st king of Joseon (18th Century Korea), reigned during the prime years of the dynasty and was its oldest king. Despite his many accomplishments, debate surrounds his reputed display of the symptoms of dementia during the last years of his life.  The King showed signs of dementia after 40 years of his regency in 1762 at the age of 69 years, including disorientation, cognitive impairment, amnestic disorder and so on. We examined evidence from the Annals of the Joseon Dynasty and related research papers. Additionally, dementia specialists were asked to undertake a survey to provide objectivity to the literary findings. Prior to his death in 1776, 25 meaningful dementia symptoms were recorded in the Annals across a 10-year period. However, despite indications of dementia, the Joseon dynasty supported him as a king and helped him retain his dignity until the end. This suggests that historical perception changes regarding dementia may also inform current-day attitudes to improve the living standards of patients suffering from dementia and related neuropsychiatric disorders.

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Many medical books of the late Joseon Dynasty were based on the medical knowledge of Donguibogam. For this reason, most of the studies have explained the medicine of the late Joseon Dynasty focusing on Donguibogam. However, the appearance of medicine in the late Joseon Dynasty is more complex than that. Although the "treatment knowledge" of Donguibogam had a huge impact in the late Joseon Dynasty, the "medical thought" of Donguibogam was not easily established. This is confirmed through the knowledge system of medical books in the late Joseon Dynasty. Jejungsinpyeon, published by the government in the late Joseon Dynasty, disassembled the contents of Dongibogam and rearranged it into a knowledge system of Uihagibmun. Injeji, which was made in the private sector, followed the same method. They tried to maintain part of the knowledge system of Donguibogam. Nevertheless, the framework of perception that extends from "human" to "disease," the central idea of Donguibogam, was not maintained. This shows that there was a considerable amount of respect for the medicine of Ming Dynasty in the late Joseon Dynasty. Therefore, for a more in-depth understanding of medicine in the late Joseon Dynasty, it is necessary to examine in more detail the influences of other medical books such as Uihagibmun, Bonchogangmok, and Gyeongakjeonseo in addition to Donguibogam. This should be understood as a process in which various medical knowledge and systems compete.

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Horace N. Allen, an American physician, was a Presbyterian missionary to Korea. In 1886, he wrote the annual report of the Korean government hospital, summarizing patient statistics according to outpatient and inpatient classification for the first ever in Korean history. In the report, he speculated that hemoptysis cases of outpatient might have been mainly caused by distoma. Allen's conjecture was noteworthy because only a few years lapsed since the first scientific report of paragonimiasis. However, he was not sure of his assumption either because it was not evidently supported by proper microscopic or post-mortem examinations. In this letter, we thus revisit his assumption with our parasitological data recently obtained from Joseon period mummies.

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Horace N. Allen, an American physician, was a Presbyterian missionary to Korea. In 1886, he wrote the annual report of the Korean government hospital, summarizing patient statistics according to outpatient and inpatient classification for the first ever in Korean history. In the report, he speculated that hemoptysis cases of outpatient might have been mainly caused by distoma. Allen’s conjecture was noteworthy because only a few years lapsed since the first scientific report of paragonimiasis. However, he was not sure of his assumption either because it was not evidently supported by proper microscopic or post-mortem examinations. In this letter, we thus revisit his assumption with our parasitological data recently obtained from Joseon period mummies.

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From the end of the 15th century, syphilis spread worldwide, posing a serious threat to public health. Venereal syphilis has been a major research topic, not only in clinical medicine but also in paleopathology, especially because it is a disease of questionable origin and of high prevalence until the discovery of antibiotics. Syphilis in history has been studied extensively in Europe and the Americas, though less so in Asia. In this review, based on extant historical documents and available paleopathological data, we pinpoint the introduction and trace the spread of venereal syphilis in Korea to the end of the 19th century. This review provides fundamental information that will be a great help in future researches on pre-20th century syphilis in Korea.

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Only a few osteological reports describe bone injuries thought to have been caused by falls from horses. Nevertheless, anthropological study alone is insufficient for establishing the correlates of such equestrian accidents. We therefore reviewed the records in Seungjeongwon ilgi (Diaries of the Royal Secretariat) and Joseon wangjo silrok (Annals of the Joseon Dynasty) of the Korea's Joseon period (1392-1910 CE). Although the mechanisms of trauma were diverse, the Joseon documents recorded many injuries caused by horse-riding accidents. During 1625-1872 CE, equestrian-related accidents occurred almost every year, overwhelming other causes of trauma. In all horse-riding accidents (n=142), 37.77% of the records offer detailed data about the traumatic mechanism. Injuries occurred most frequently to the extremities (79.58%), which were followed by the trunk (34.5%) and head (4.92%). Although we do not think that this attempt can explain every paleopathological case, our historical review shows that equestrian-related injuries could be considered as one of the major causes for the bone trauma observed among ancient equestrian people.

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In the 15th century, Joseon dynasty's goal for the stabilization of the ruling system, the ideological freedom of the era, and the necessity of medicine due to the introduction of Jin and Yuan dynasty's medicine led to the increased interest in medicine by the nobility along with tolerant practice. The practice of reading medical books is a good example of this institutional demonstration. However, by the end of the 15th century, a noticeable change had taken place. Within the nobility, there was an ideological rigidity regarding technology other than those of Confucianism, as the nobility became concentrated on the principles of Neo-Confucianism. In addition, as the publication of large-scale editions such as Ŭibangyuch'wi (the Classified Collection of Medical Prescriptions) came to an end, they have become less inclined to nurture talent at the level of the central government as in the previous period. In addition, as the discrimination against illegitimate children became stronger, technical bureaucrats such as medical officials, which were open to illegitimate children, came to be seen in increasingly disdainful and differentiated manners. From the late Sejong period to the early Seongjong period, the entrance of illegitimate sons into the medical bureaucracy solidified the negligence of medicine by the nobility. After then, the medical bureaucracy came to be monopolized by illegitimate sons. As for illegitimate sons, they were not allowed to enter society through Confucian practices, and as such, the only way for them to enter the government was by continuing to gain experience as technical bureaucrats. Technical posts that became dominated by illegitimate sons became an object of contempt by the nobility, and the cycle reproduced itself with the social perception that legitimate sons of the nobility could not become a medical official. Medical officials from the Yi clan of Yangseong had been legitimate sons and passers of the civil service examination in the 15th century. However, in the 16th century, only illegitimate sons became medical officials. The formation of Jungin (middleclass) in technical posts since the middle of the Joseon period is also related to this phenomenon. The Yi clan of Yangseong that produced medical officials for 130years over four generations since Yi Hyoji, a medical book reading official, is an exemplary case of the change in the social perception in the early Joseon period regarding medical bureaucrats.

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We found calcified pulmonary nodules in a middle-aged female mummy discovered from 350-yr-old Joseon tomb of Korea. In the CT scan, we found six radiopaque nodules in right lung, through the levels of thoracic vertebrae 1 to 6. We also found presumptive pleural adhesions in right thoracic cavity of CT images. We re-confirmed radiological findings by our post-factum dissection on the same mummy. By the differential diagnosis, we speculate that the radiopaque calcification nodules and associated pleural adhesion could have been caused by tuberculosis. This is the first-ever report on the pulmonary tuberculosis identified in archaeologically obtained, pre-modern Korean samples.

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In this study, the pattern of bilateral asymmetry in the eye orbit and nose of the Joseon Dynasty skeletal group was analyzed using geometric morphometrics. For this, 38 adult males and 38 adult females from the Joseon Dynasty skeletal group belonging to the 15(th) to early 20(th) centuries were examined. For geometric morphometric analysis, Procrustes superimposition was performed on 10 landmarks in both eye orbits and 7 nasal landmarks. The data were analyzed by multivariate analysis of variance with partial least square scores. In results, the lateral landmarks had more impact on the bilateral asymmetry in the eye orbit and nose than the center landmarks. The eye orbit and nose on the right side of the face seemed bigger than those of the left side, while the direction of asymmetry in the eye orbit and nose was different. The correlation between asymmetry patterns in the eye orbit and nose were statistically significant (p<0.01). The results of this study will be useful for examining causes of bilateral asymmetry in the eye orbits and noses of the Korean population.

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We found calcified pulmonary nodules in a middle-aged female mummy discovered from 350-yr-old Joseon tomb of Korea. In the CT scan, we found six radiopaque nodules in right lung, through the levels of thoracic vertebrae 1 to 6. We also found presumptive pleural adhesions in right thoracic cavity of CT images. We re-confirmed radiological findings by our post-factum dissection on the same mummy. By the differential diagnosis, we speculate that the radiopaque calcification nodules and associated pleural adhesion could have been caused by tuberculosis. This is the first-ever report on the pulmonary tuberculosis identified in archaeologically obtained, pre-modern Korean samples.

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To date, there are still very few reports on benign-tumor cases based on East Asian skeletal series, even though other regions and continents have been well represented. In our study on the Joseon Human Skeletal Series, we identified benign bone tumors in two skeletons (cases Nos. 75 and 96). Our radiological analyses showed both cases to be homogeneous sclerotic bone masses aligned with the cranial vault suture. In a subsequent series of differential diagnoses, we determined both cases to be osteoma, the most common bone-tumor type reported for archaeological samples. Our study is the osteoarchaeological basis for this, the first-ever report on benign bone neoplasm in a pre-modern East Asian population.

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In Korea, ancient DNA (aDNA) analysis has been applied to investigations into the genetic affiliations of mummies found in Joseon Dynasty tombs (1392-1910 CE), becoming now indispensable tool for researches studying human remains from archaeological sites. In the course of our recent examinations on a Korean mummy of Joseon Dynasty, we discovered many teeth contained in a pouch. And in fact, the historical literature on the topic of Joseon funerals contain general accounts of pouches in which an individual's lost teeth were collected over the course of a lifetime and, after death, placed in the coffin with the body. To test the veracity of the historical texts, the present study undertook aDNA analyses and compared the results between specifically questioned (Q) samples (teeth) and known (K) samples (brain and bone) from the mummy to ensure that they came from the same individual. Although the Q-K comparison of autosomal short tandem repeat results did not show full concordance due to allelic drop-outs in some loci, our statistical calculation indicated that the teeth in the pouch are highly likely those of the mummy. Additionally, Q-K comparison of mitochondrial DNA sequence results showed 100% matches between samples. There results, in short, could not gainsay the conjecture that the teeth samples originated from the person buried in the tomb; and if so, he must have kept his teeth for a long time after their loss. As the application of aDNA analysis to Korean mummy studies develops, there will be other opportunities to test historical documents, particularly those referring to funerary rites.

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Through the cases of approximately 80 females in the case records of traditional physician Yi Sugwi (1664-1740?), the present study divided and reclassified the lives and diseases of females during the latter half of the Joseon Dynasty into childhood, obstetrics- and gynecology-related problems in adulthood, other diseases in adulthood, and old age and analyzed them. According to the results, female children were treated less preciously than were male children so that treatments by traditional physicians were sought out less when they were ill than in the case of male children, and acute infectious diseases were the most serious health problems. In the process of receiving treatment from traditional physicians as adults, females came in contact with traditional physicians, who were male, when necessary including face-to-face sessions and the reception of pulse examination but the yangban (literati-official) class practiced sex segregation as much as possible while the lower classes were considerably free from such restrictions. For female adults, the most serious health issues were pregnancy and childbirth so that they received help from traditional physicians and midwives when there were problems. Traditional physicians determined females' pregnancy and the health of fetuses and pregnant women through pulse examinations and medication and actively responded to diverse problems that surfaced in the process with medication and other treatments. Acute infectious diseases, too, were serious diseases suffered by females, and problems involving cold damage and the digestive system were among diseases frequently suffered by females in adulthood and old age. In old age, females often became ill in the arduous process of dealing with the deaths of adult descendants, siblings, and spouses, and tumors were among the major causes of their deaths. The deaths of those aged 70 or above were accepted as quite natural. Aged females endeavored to maintain their health and played the role of elders giving care to their descendants.

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Traditional morphometrics uses ratios between measured values such as the cranial index and the upper facial index. However, with these ratios alone, it is impossible to represent the shape of the entire cranium in a three-dimensional space because ratio does not express coordinate data. This methodological limitation of traditional morphometrics makes it difficult to evaluate relations between cranial parts. However, it is important to assess relations between cranial parts because cranial parts change their shapes in an integrated way. Therefore, this study adopted geometric morphometrics to overcome the limitations of traditional morphometrics and provide a more enhanced visual analysis of the cranial shape. Using geometric morphometrics, this study focused on variations of cranial shapes in a population from Joseon Dynasty to obtain their specific characteristics. This study investigated variations of cranial shapes in 57 individuals from Seoul Gyeonggi province who lived in the 15th to the early 20th centuries. The coordinates of the crania were collected by MicroScribe G2X (Immersion Corporation, USA) and statistically analyzed using principal component analysis. The results showed that the variations in cranial shapes of females were reflected mostly in width, length of cranium, position of bregma, shape of posterior part of cranium, and length of facial bone. The cranial shapes of the males varied mostly in length, width, height of cranium, size of mastoid process, and length of facial bones. The cranial length became shorter when the cranial width became broader in both sexes. However, cranial height and facial length showed different variations between the two sexes. In addition, the variation in females only showed evidence of static allometry. The results of this research provide basic information about cranial shapes in a population from Joseon Dynasty and will be useful in future studies such as analysis on between-group differences. By identifying within-group variations first, researchers focusing on between-group differences will likely avoid erroneous conclusions.

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To date, there are still very few reports on benign-tumor cases based on East Asian skeletal series, even though other regions and continents have been well represented. In our study on the Joseon Human Skeletal Series, we identified benign bone tumors in two skeletons (cases Nos. 75 and 96). Our radiological analyses showed both cases to be homogeneous sclerotic bone masses aligned with the cranial vault suture. In a subsequent series of differential diagnoses, we determined both cases to be osteoma, the most common bone-tumor type reported for archaeological samples. Our study is the osteoarchaeological basis for this, the first-ever report on benign bone neoplasm in a pre-modern East Asian population.

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Stable carbon and nitrogen isotope analysis reveals the diets of different human populations in history. In this study, we performed stable isotope analysis on human skeletons from Joseon-period cemeteries discovered around Old Seoul City (Hansung). Our data clearly showed that Joseon individuals consumed more C3-based than C4-based foods as the main staples, and that the proteins they ate were mainly of terrestrial, but not of marine origin. Stable isotope values exhibited unique patterns in each of our sample subgroups. Whereas the δ(13)C values did not show any statistical differences among the subgroups, significantly higher values of δ(15)N were found in males than in females, which might reflect dietary differences between the sexes. For a fuller understanding of the dietary patterns of pre-industrial (pre-20th century) Koreans, additional studies on Joseon samples from Korean archaeological sites will be necessary.

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Paleoparasitology is the application of conventional or molecular investigative techniques to archeological samples in order to reveal parasitic infection patterns among past populations. Although pioneering studies already have reported key paleoparasitological findings around the world, the same sorts of studies had not, until very recently, been conducted in sufficient numbers in Korea. Mummified remains of individuals dating to the Korean Joseon Dynasty actually have proved very meaningful to concerned researchers, owing particularly to their superb preservation status, which makes them ideal subjects for paleoparasitological studies. Over the past several years, our study series on Korean mummies has yielded very pertinent data on parasitic infection patterns prevailing among certain Joseon Dynasty populations. In this short review, we summarized the findings and achievements of our recent paleoparasitological examinations of Joseon mummies and discussed about the prospects for future research in this vein.

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