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The Madín Dam is a reservoir located in the municipalities of Naucalpan and Atizapán, in the metropolitan area adjacent to Mexico City. The reservoir supplies drinking water to nearby communities and provides an area for various recreational activities, including kayaking, sailing and carp fishing. Over time, the number of specimens of common carp has notably diminished in the reservoir, which receives direct domestic drainage from two towns as well as numerous neighborhoods along the Tlalnepantla River. Diverse studies have demonstrated that the pollutants in the water of the reservoir produce oxidative stress, genotoxicity and cytotoxicity in juvenile Cyprinus carpio, possibly explaining the reduction in the population of this species; however, it is necessary to assess whether these effects may also be occurring directly in the embryos. Hence, surface water samples were taken at five sites and pharmaceutical drugs, personal care products (especially sunscreens), organophosphate and organochlorine pesticides, and other persistent organic pollutants (e.g., polychlorinated biphenyls and polycyclic aromatic hydrocarbons) were identified. Embryos of C. carpio were exposed to the water samples to evaluate embryolethality, modifications in embryonic development, lipoperoxidation, the quantity of hydroperoxide and oxidized proteins, and antioxidant enzyme activity (superoxide dismutase, catalase and glutathione peroxidase). It was found that the polluted water of the Madín Dam gave rise to embryolethality, embryotoxicity, congenital abnormalities, and oxidative stress on the common carp embryos. Capsule: The water of the Madín dam contains a complex mixture of pollutants, including hydrocarbons, which produce oxidative stress and embryotoxicity on Cyprinus carpio. © 2019 Elsevier Ltd

This work is a review of the information about childhood obesity in Mexico from 2000 to 2012. Obesity is a public health problem, which has recently reached epidemic proportions in some countries. This pathology is the main problem of adult malnutrition and has dramatically increased in children, since it is estimated that over 40 million children have overweight or obesity. It involves several factors such as genetic, metabolic, psychosocial and environmental ones. As a result, it is difficult to distinguish their influence in different cases. However, a well-recognized factor in the development of childhood obesity is the media, which promotes a sedentary lifestyle. Childhood obesity is a risk factor associated with cardiovascular disease in adults, hypertension, hypercholesterolemia and diabetes Type II. (MÉD.UIS. 2013;26(1)59:68)., Este escrito comprende una revisión bibliográfica sobre la obesidad infantil en México desde el año 2000 a 2012. La obesidad constituye un problema de salud pública la cual recientemente ha alcanzado proporciones de epidemia en algunos países. Esta patología constituye el principal problema de malnutrición en el adulto y es una enfermedad que ha aumentado notoriamente en la población infantil, ya que se calcula que más de 40 millones de niños padecen sobrepeso u obesidad. Es un trastorno multifactorial en cuya etiopatogenia están implicados factores genéticos, metabólicos, psicosociales y ambientales, por lo que es difícil distinguir en cada caso en particular la importancia relativa de estos factores. La obesidad infantil es uno de los factores de riesgo vinculados al aumento de enfermedad cardiovascular en el adulto, junto con la hipertensión, hipercolesterolemia y diabetes tipo II; se ha identificado que un factor importante en el desarrollo de la obesidad infantil es la influencia de los medios electrónicos que promueven un estilo de vida básicamente sedentario. (MÉD.UIS. 2013;26(1)59:68).