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Rh negative12/18/2023 ![]() These buttons were pressed by more than 1,600 participants, which resulted in obtaining data from 12,600 responders in total between 27 th May 2016 and 29 th June 2018. Some pages of the questionnaire contained the Facebook share and like buttons. Only the subjects who provided their informed consent by pressing the button could participate in the study. If you agree to participate in the research press the ‘Next’ button”. You can also skip any uncomfortable questions however, complete data is most valuable. Your cooperation in the project is voluntary, and you can terminate it at any time by closing this web page. At the first screen of the survey, the participants were given the following information and were asked to provide their informed consent to participate in the study: “The study is anonymous and obtained data will be used exclusively for scientific purposes. ![]() Responders were not paid for their participation in the study however, after finishing the 80-minute questionnaire, they were provided information about the results of related studies and their own results of several tests that were part of the questionnaire. ![]() Potential volunteers, mostly members of the “Lab Bunnies” community, an 18,000-member group of Czech and Slovak nationals willing to take part in evolutionary psychology experiments, and their Facebook friends, were invited (using about 10 different posts on the Lab bunnies timeline) to participate in an anonymous study about “magical thinking, superstitions, prejudices, religion and the relation between various environmental factors, and health and wellbeing.” The questionnaire was also promoted in various electronic and printed media and TV–always without mentioning RhD, rhesus factor, or blood groups. Subjects were invited to participate in the study using a Facebook-based snowball method. The internet questionnaire was distributed as a Qualtrics survey. To enable assessment of the relative strength of the observed effects, we also computed the effects of smoking, alcohol consumption, and being overweight (body mass index) on the same set of health- and wellbeing-related variables. ![]() These subjects participated in a large internet study primarily dealing with the effect of the Toxoplasma infection on physical and mental health. In the present cross-sectional study, we search for the possible effects of Rh negativity on wellbeing, physical and mental health, fecundity, and sexual desire and behavior of 5,527 subjects, 3,759 women and 1,768 men. Until now, no data has been published regarding the effect of Rh phenotype on quality of life, for example, on wellbeing, measured with a standard psychological instrument. Rh-positive heterozygotes were found likeliest to have the best health and performance relative to all other subjects, suggesting that the Rh-polymorphism is sustained in the population by balancing selection in favor of heterozygotes. Generally, Rh-negative subjects have worse health, score worse in some performance tests, and express higher sensitivity to various negative environmental factors, such as Toxoplasma infection and smoking. Recently, however, several studies suggested the existence of specific effects of Rh phenotype and genotype on human psychomotor performance and health. With the exception of this immunological effect and sporadic reports about the possible association of Rh negativity with certain personality traits, no effects of the Rh genotype on human phenotype have been described. It has been suggested that this selection pressure is (or was) counterbalanced by another selection, for example, by selection in favor of heterozygotes or in favor of Rh-negative subjects during the Paleolithic period. Therefore, the Rh-positive progeny of Rh-negative mothers often died due to hemolytic anemia of newborns before the introducing of prophylactic treatment with anti-D immunoglobulins during pregnancy. The protein coded by the functional allele D possesses an extremely strongly immunogenic epitope. The gene codes a part of ammonium or CO 2 pump on the surface of erythrocytes however, the biological function of this pump is unknown. About 16% of the population in Europe (5% in Africa and 1% in Asia) are Rh-negative, i.e., they carry two copies of the allele of the RHD gene with large deletion, the d allele.
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