USA(1) and Brazil(2) are two democratic governments with considerable religion liberty. However, both countries have a considerable prevalence of Christian religions.

Brazil always had a dominance of the Catholic Church mostly because of the Portuguese colonization, and the USA a dominance of Protestants church because of their British colonization. We can see this on the Figure 1. In the USA the Adherence of Protestants, Catholics and not Religious people have not change too much in the period 1945–2010. Unlike, in Brazil a fast drop of Catholic adherence were seen after 1985 and a fast increase in the Protestant adherence.


The National Health and Nutrition Examination Survey (NHANES) is a study assessing information about health and nutrition status of people in the USA. NHANES began in early 1960s as a series of surveys and from 1999 to 2018 as continuous program. It is a very important survey rising statistical data about health of USA population (

NHANES logo.

Data about age and gender were used from demographic dataset as well as systolic and diastolic blood pressure (BP) from Blood Pressure dataset. The datasets used ranged from 1999–2000 to 2017–2018 and can be found here:

The python code used for the chart…

João Guilherme

Bachelor in Biomedical Sciences, Master in Pharmacology and PhD student in neuroscience. Currently seeking experience in Data Science.

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