There is a broadcaster in Cork, Neil Prendeville, who has no problem promoting pseudoscience and instilling fear into people during his radio programme. He regularly invites a guest, Michael O’Doherty, whom he calls a medical professional, onto his show to expound on vaccines and antibiotics. O’Doherty has no medical qualifications. He is a quack healer whose shtick seems to be that natural is good, that the body is capable of healing itself without the need for modern medicine.

This stuff is dangerous. It is simply not true to say that our bodies are able to deal with every illness that comes along. The flu, a common disease, kills millions of people every year. Before modern medicine, deaths from smallpox, measles and TB were common. They are much less so now because of vaccines, antibiotics and antivirals. Where is the evidence for the great natural panaceas they keep talking about? In…