Dr. Hans C. Ossebaard gave, in their reports, further evidence of the necessity of the use of ayahuasca in the Santo Daime services. Dr. Ossebaard wrote that depending on set and setting, drugs could trigger a mystical experience to the 'Unio Mystica', the spontaneous and conventional mystical experience spoken of in medieval Christian literature. Ad le van der Plas than continued with the limitations of the right to freedom of religion. Citing again some recent cases of individuals against European nation states by the European Court of Human Rights, she came to the conclusion that the nation state had to prove how severe and dangerous a certain situation was. All experts came to the conclusion that DMT was not a threat to public health.
Some experts are also convinced of the medicinal value of ayahuasca.
In Brazil the use of ayahuasca was legalized in 1992 after an intensive research about the public health aspects. In 1997 the Brazilian government made the recommendation not to serve ayahuasca to people younger than 18 years. The defense lawyer stressed ayahuasca was never served to minors in the Dutch Santo Daime church. DMT is no threat to public health and, according to Van der Plas, therefore the action of the Dutch authorities against the Santo Daime church was a violation of the constitutional right to freedom of religion. DMT is a controlled substance in Holland because it is mentioned in the Psychotropic Substance Treaty.