For a deep understanding of the IML Theory (Intra-Myacellular Lipid Theory) for diabetes, we may watch Dr Gerald Shulman's Banting Lecture below.

What is a Banting Lecture? Sir Frederick Banting was a seminal scientist and a Nobel laureate who co-discovered insulin. Banting Lectures are organized in his memory by ADA (American Diabetes Association) — a luminary in diabetes is invited to give a presentation. In 2018, Dr Gerard Shulman was invited for the Banting Lecture — check out his mind-blowing list of publications (Google Scholar).