The video link below will take about 90 minutes of your time. I promise you that it’s worth watching. If the few minutes spent on the bio/chem are a challenge to follow, don’t worry, the conclusions Dr. Lustig makes are worth watching till the end.
Robert H. Lustig, MD, UCSF Professor of Pediatrics in the Division of Endocrinology, explores the damage caused by sugary foods. He argues that fructose (too much) and fiber (not enough) appear to be cornerstones of the obesity epidemic through their effects on insulin.
If you can’t click on the link, just copy https://www.youtube.com/watch?v=dBnniua6-oM into your browser.