Science.ca describes him as one of the world's foremost experts on the molecular understanding of the ways bacteria infect their hosts.
[6] He is also co-author of the book Let Them Eat Dirt: Saving Your Child from an Oversanitized World and The Whole-Body Microbiome: How to Harness Microbes - Inside and Out - For Lifelong Health.
[8] Finlay has co-authored, with Marie-Claire Arrieta, a book for general audiences, Let Them Eat Dirt: Saving your child from an oversanitized world,[23] about the critical role microbes play in early childhood development, having a major impact on both health and disease.
It was published by Algonquin Books (USA) and Greystone (Canada) in Sept 2016, and is being translated into 11 languages In The Whole-Body Microbiome: How to harness microbes - inside and out - for lifelong health, Finlay and his environmental gerontologist daughter Dr. Jessica Finlay focus on the teeming world of microbes everywhere in and around us.
In this book, the Finlays suggest improvements to lifestyle, diet, and household practices to promote the right kind of microbial exposure.