I am glad to hear that the Vatican is issueing  new guidelines on supernatural phenomena. The document, compiled by the Vatican’s Dicastery for the Doctrine of the Faith, will lay out rules to assess the truthfulness of supernatural claims. Reports of such phenomena are said to have soared in recent years in an era of social media – sometimes spread through disinformation and rumour. The guidelines are likely to tighten criteria for the screening, analysis, and possible rejection of cases.

Apparitions have been reported across the centuries. Those recognised by the Church have prompted pilgrims, and popes, to visit spots where they are said to have taken place. Millions flock to Lourdes in France, for example, or Fatima in Portugal, where the Virgin Mary is alleged to have appeared to children, promising a miracle – after which crowds are said to have witnessed the sun zig-zagging through the sky. The visitation was officially recognised by the Church in 1930.

But other reports are found by church officials to be baloney. In 2016, an Italian woman began claiming regular apparitions of Jesus and Mary in a small town north of Rome after she brought back a statue from Medjugorje in Bosnia, where the Virgin Mary is also said to have appeared. Crowds prayed before the statue and received messages including warnings against same-sex marriage and abortion. It took eight years for the local bishop to debunk the story.

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Perhaps the Vatican should also have a look at faith healing*, the attempt to bring about healing through divine intervention. The Bible and other religious texts provide numerous examples of divine healing, and believers see this as a proof that faith healing is possible. There are also numerous reports of people suffering from severe diseases, including cancer and AIDS, who were allegedly healed by divine intervention.

Faith healing has no basis in science, is biologically not plausible. Some methodologically flawed studies have suggested positive effects, however, this is not confirmed by sound clinical trials. Several plausible explanations exist for the cases that have allegedly been healed by divine intervention, for instance, spontaneous remission or placebo response. Another explanation is fraud. For instance, the famous German faith healer, Peter Popoff, was exposed in 1986 for using an earpiece to receive radio messages from his wife giving him the home addresses and ailments of audience members which he purported had come from God during his faith healing rallies.

Faith healing may per se be safe, but it can nevertheless do untold indirect harm, and even fatalities are on record: “Faith healing, when added as an adjuvant or alternative aid to medical science, will not necessarily be confined to mere arguments and debates but may also give rise to series of complications, medical emergencies and even result in death.”

Alternatively, the Vatican might look at the healing potential of pilgrimages*, journeys to places considered to be sacred. The pilgrims often do this in the hope to be cured of a disease. The purpose of Christian pilgrimage was summarized by Pope Benedict XVI as follows:

To go on pilgrimage is not simply to visit a place to admire its treasures of nature, art or history. To go on pilgrimage really means to step out of ourselves in order to encounter God where he has revealed himself, where his grace has shone with particular splendour and produced rich fruits of conversion and holiness among those who believe.

There are only few scientific studies of pilgrimages. The purpose of this qualitative research was to explore whether pilgrims visiting Lourdes, France had transcendent experiences. The authors concluded that visiting Lourdes can have a powerful effect on a pilgrim and may include an “out of the ordinary” transcendent experience, involving a sense of relationship with the divine, or experiences of something otherworldly and intangible. There is a growing focus on Lourdes as a place with therapeutic benefits rather that cures: our analysis suggests that transcendent experiences can be central to this therapeutic effect. Such experiences can result in powerful emotional responses, which themselves may contribute to long term well-being. Our participants described a range of transcendent experiences, from the prosaic and mildly pleasant, to intense experiences that affected pilgrims’ lives. The place itself is crucially important, above all the Grotto, as a space where pilgrims perceive that the divine can break through into normal life, enabling closer connections with the divine, with nature and with the self.

Other researchers tested the effects of tap water labelled as Lourdes water versus tap water labelled as tap water found that placebos in the context of religious beliefs and practices can change the experience of emotional salience and cognitive control which is accompanied by connectivity changes in the associated brain networks. They concluded that this type of placebo can enhance emotional-somatic well-being, and can lead to changes in cognitive control/emotional salience networks of the brain.

The risks involved in pilgrimages is their often considerable costs. It is true, as the text above points out that “millions flock to Lourdes in France”. In other words, pilgrimiges are an important source of income, not least for the catholoc church.

A more important risk can be that they are used as an alternative to effective treatments. This, as we all know, can be fatal. As there is no good evidence that pilgrimiges cure diseases, their risk/benefit balance as a treatment of disease cannot be positive.

So, will the new rules of the Vatican curtail the risks on supernatural healing practises? I would not hold my breath!

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* for references see my book from where this text has been borrowed and modified.