In 2010 she published the book Maníacos de Qualidade ("Maniacs of Quality"),[4] a biographical and psychological analysis of historical figures in Portugal.

She authored the political column on RTP N and wrote in the newspaper Correio da Manhã and the blog Frontal Cortex.

[7][8][9] She has propagated a narrative contrary to the medical and scientific consensus in her social media platforms, as well as on her regular TV appearances.

Her position is based on the premise that most of the specialists are regularly lying, as it has been alleged that many of them received directly or indirectly payments from big pharma, or exaggerate results, in order to advance their agenda.

[13] In reaction to the record breaking heat wave in London, Joana wrote in Novo Semanário that in June 1885 and July 1886 temperatures had been higher at 162°F and 155°F respectively.