I am very saddened to hear of the passing of world renown epidemiologist Dr. David Barker. I had the privilege of meeting him 2010 when he came to lecture at Queen’s University, Kingston. I was given the opportunity to present some ideas to him – just 10 minutes – regarding important intersections between sociology and his science. What a wonderful moment it was when he told me, “I completely agree with everything you’ve said.” I later wrote an article concerning the transdisciplinary and social justice potentials of the Barker hypothesis and related theories of the developmental origins of health and disease (DOHaD). Needless to say, his research has had a major influence on my thinking and work. Rest in peace, Dr. Barker.