Did anyone see this? It was an excellent historical review of progress in our understanding of the endocrine system.
One of the most recent discoveries was the role of leptin in weight-control. However, the professor focussed on the hereditary component, without really acknowledging that our 'food' affects our hormones. For instance, too much fructose impairs circulation by glycating haemoglobin, and contributing to fatty deposits that then inhibit receptors for cholesterol and insulin. This then sets up the state of 'insulin resistance' where more insulin is released to try and keep blood glucose within necessary parameters (exacerbated by high-glycaemic foods glycemicindex.com ).
Too much insulin then affects other hormones, including leptin.