Growth and nutritional status of Khasi boys in Northeast India relating to exogamous marriages and socioeconomic classes

The Khasis are one of the matrilineal tribes of Meghalaya in Northeast India. They belong to the Indo-Mongoloid racial stock, and speak the Monkhmer language of the Austro-Asiatic group. They have their own traditional religion (Niam Khasi), but about 65% of them have converted to Christianity. A few Khasi members have also embraced Islam through matrimonial relationship with immigrant Muslim males. The present study was based on a cross-sectional sample of 1,351 urban Khasi boys aged 3-18 years belonging to these three religious groups, with a view to understanding the effects of socioeconomic factors on growth and nutritional status, using anthropometric variables such as weight and height. The findings showed that about 60%, 29%, and 6% of these boys were below -2 Z-scores of the US National Center for Health Statistics (NCHS) references in respect of weight for age, height for age, and body mass index for age, respectively. The logistic regression coefficient (beta +/- standard error) indicated that the prevalence of low weight for age (below -2 Z-scores of the NCHS references) was positively associated with age (0.088 +/- 0.014, P<0.0001), while it was inversely associated with household income (-1.216 +/- 0.030, P<0.0001). Likewise, low height for age Z-score was negatively associated with household income (-1.056 +/- 0.130, P<0.0001), although such a relationship was not significant in the case of low body mass index for age (-0.169 +/- 0.229, P>0.05). There were also significant differences between religious groups in respect of anthropometric variables. Allowing for household income, the ANCOVA test indicated that Muslim Khasi boys, who were the offspring of intermarriages between Khasi females and immigrant Muslim males, were significantly heavier and taller than Christian and Niam Khasi boys almost across ages. From about 3-10 years of age, Muslim Khasi boys were, on average, comparable to the 5th and 25th percentiles of the NCHS references of height and weight, respectively. Although it looks as though genetic mechanisms like heterosis and/or gene flow might also be associated with the larger body size in Muslim boys, such a conjecture could only be substantiated or refuted by further studies concerning genetic and more socioeconomic data on both immigrant and nonimmigrant populations.     

The economic burden of lymphatic filariasis in India

Lymphatic filariasis affects 119 million people living in 73 countries, with India accounting for 40% of the global prevalence of infection. Despite its debilitating effects, lymphatic filariasis is given very low control priority. One of the reasons for this is paucity of information on the economic burden of the disease. Recent studies in rural areas of south India have shown that the treatment costs and loss of work time due to the disease are considerable. Based on the results of these studies, Kapa Ramaiah et al. here estimate the annual economic loss because of lymphatic filariasis for India and discuss the implications of their findings.     

Health care utilization, socioeconomic factors and child health in India

This paper models the proximate determinants of height, weight and haemoglobin concentration of over 25,000 Indian children using data from the National Family Health Survey-3. The effects of public and private health care service utilization, food consumption patterns and maternal health status on child health were investigated in a multidisciplinary framework. Methodological issues such as potential endogeneity of explanatory variables and the appropriateness of combining height and weight as the body mass index were tackled. The results from models for children's heights and weight showed beneficial effects of child vaccinations against DPT, polio and measles, and negative effects of not utilizing government health facilities. The models for children's haemoglobin concentration indicated beneficial effects of food consumption patterns and treatment against intestinal parasites. The results provide several insights for improving child health in India.     

Handedness and socioeconomic status in an urban population in Uzbekistan

The persistence of left-handers in every human population studied to date is an evolutionary puzzle in light of evidence of survival costs associated with left-handedness. Associations between left-handedness and socioeconomic advantages have been observed in Western countries and could provide left-handers fitness benefits through higher survival chances and greater reproductive success. We aimed to explore the generality of this result in another culture. For this purpose, we investigated several socioeconomic status indicators and the number of children alive for 917 men and women in Uzbekistan and compared results for two different measures of handedness: hand preferences for writing and for knife use. Among both men and women, left-handed writers were significantly more likely to own a car, own a washing machine and have a bank account. Left-handed women (using both measures) had a higher income than right-handed women. Among men, left-handers for knife use had a higher income than right-handers. The results of our study suggest that the previously observed socioeconomic advantage of left-handers in Western populations also applies to non-Western populations, at least in the urban environment studied. However, we did not detect any difference in the number of children. We discussed how the frequency-dependent socioeconomic status advantage could be responsible for the persistence of left-handers throughout human evolution.     

Teenage fertility, socioeconomic status and infant mortality

This paper examines the relationship between infant mortality and a complex measure of socioeconomic status for evidence of diminution. In data on counties in the US with a minimum of 20 infant deaths over the 5-year period 1971-75, no evidence of a declining relationship between socioeconomic status and infant mortality was found. Both level of community affluence and racial composition of the population exerted direct effects on levels of infant deaths. In addition, both socioeconomic status and racial composition exhibited indirect effects which operated through teenage childbearing. When total infant mortality was subdivided, teenage fertility serves as a mediating variable in the link between socioeconomic status and neonatal mortality, but not for the postneonatal components. Given the nearly equivalent total effect of socioeconomic status on infant mortality, it is concluded that the classic division into neonatal (supposedly a function of biological and genetic agents) and postneonatal (traditionally attributed to social and environmental agents), may be too crude to allow the contemporary effects of the socioenvironmental milieu to be evaluated effectively.     

Height,socioeconomic status and marriage in Italy around 1900

This study examines the role of height in the process of mate selection in two Italian populations at the turn of the twentieth century, Alghero, in the province of Sassari, and Treppo Carnico, in the province of Udine. Based on a linkage between military registers and marriage certificates, this study reveals a negative selection of short men on marriage and a differential effect of tallness by population in the process of mate choice. These findings emerge once SES is taken into account in the risk models of marriage.     

Rural life, lower socioeconomic status and parasitic infections

This study was conducted both to assess the prevalence of parasitic infections in two neighboring villages of Manisa province in Turkey, with different socioeconomic levels and investigate the influences of some individual and environmental factors on these infections. A total of 100 school children were enrolled and their cellophane tape and stool samples were examined for parasites. Pediculus capitis infestation was diagnosed by visual inspection of the hair. Although the prevalences of both intestinal parasitosis and pediculosis were high in both villages, there was a statistically significant difference for pediculosis, but not for intestinal parasitosis. Lack of social security and father's regular job were found to be highly correlated with all parasitic infections. Pediculosis was more common in younger children, girls and those in crowded families. These results indicate not only the high prevalence of parasitic infections, but also the urgent need for the improvement of basic health services and infrastructure in the rural areas, crowded with poorer immigrant population.     

Health status as geneologic burden in aging process

Knowledge of modern molecular biology is leading to the idea that aging and diseases of the aged are two different entities. Healthy life is relatively limited by the specific number of chronic conditions which are present more in old age. Up to now the idea of aging as a process in relation to the individual, organ, tissue, cell or a molecule. There are only few studies on the influence of aging within a single family and even less of aging within several generations of the same family. Genealogic level is one way of getting into the process of family system and aging throughout time. The aim of the study was to determine the significance of genealogical burden with regard to the health status in examinees with different cognitive capabilities. The difference according to sex and age was not significant between the two groups. Health status of the examinees proband in both groups showed 34.4% healthy examinees in the group D and 65.3% in group G. The difference between the two groups was statistically significant. The difference of health status of parents (II. generation) was statistically significant in both groups. Morbidity of diseases was not statistically significant. Most of the ancestors from the grandmothers and grandfathers (III generation) died. (group G--97.5%, group D--100%). Statistically significant difference is present among the diseases of the circulatory system and those of digestive system in this generation. Data on the ancestors of the IV. generation showed that all the relatives died in both groups. CONCLUSION: The health status of the examinees with higher impairment in the test of cognitive capabilities is worse and they come from the families with worse health status.