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This research study presents the results of evaluating the response to stress by heat in a flock of one hundred tropical milking criollo cows (TMC), maintained under a system of double intention for more than forty years in the Mexican tropic. In addition, the behavior of the indicators: climate; ambient temperature (AT ° C) and relative humidity (RH %) were analyzed in the region under study during both years of experience and the previous forty years. The rectal temperature (RT ° C) and the respiratory frequency (RF) rpm were considered as physiological responses to stress. The climate of the region showed a great stability in the years of study and the previous forty as well as clear seasonality between the dry - rainy seasons, with a temperature and humidity index (THI) different among times and morning and evening readings (p< 0,001). Changes in the response variables to stress by heat of the (RF) of the cows allowed, by means the CLUSTER test, to establish three different types of response from stress by heat; 36 cows without stress, (> 36 rpm), 29 with soft and moderate stress (46-60 rpm) and 35 with high stress (61 - 90 rpm). These data demonstrate that the cows belonging to the breed (TMC) are not a homogenous group against stress by heat, and allow to establish criteria for future selection programs [ABSTRACT FROM AUTHOR]

There are decisions at the end of life that currently are relevant as humanistic values. Respect for human life and dignity are part of human rights. The National Academy of Medicine of Mexico declares its posture about end-of-life decisions that include treatment refusal, limitation of the therapeutic effort, advance directives and palliative sedation, among others, with the purpose to favor a peaceful death., (Copyright: © 2018 SecretarÍa de Salud.)

In recent years, the use of stem cells for therapeutic purposes has received attention from research groups. In Mexico, the Mexican Official Standard 260-SSAI-2015 regarding the use of stem and progenitor cells for therapeutic and research purposes is in the process of authorization. Even when this has not been approved, an increasing number of establishments are offering medical services involving the use of stem cells for therapeutic purposes without official regulatory authorization. The Mexican Academy of Medicine of Mexico makes its position public in favor of regulating the use of stem cells and embryos for therapeutic and research purposes., (Copyright: © 2018 SecretarÍa de Salud.)

In Mexico there is a proliferation of "centers for aesthetic medicine" that offer different treatments with laser beam, mesotherapy and hyaluronic acid and botulinum toxin injections. In numerous centers of this type, offered and performed by medical personnel that are neither trained or certified to ensure the quality of services. The National Academy of Medicine of Mexico and the National Normative Council for Medical Specialties (CONACEM) communicate their posture on this matter., (Copyright: © 2018 SecretarÍa de Salud.)

As a consequence of the Presidential Decree that reforms and additions the General Statute of Health with regard to medicinal and scientific use of tetrahydrocannabinol, its isomers and stereochemical variants, the National Academy of Medicine of Mexico declares its position in favor of regulating investigation and national production thereof., (Copyright: © 2018 SecretarÍa de Salud.)