The SKINNY ON OBESITY is a series on YouTube that you should listen to by Robert Lustig M.D. as it is so helpful to those of us over 40. I'm 63 and just had to start learning what to do about having GOUT which is very painful at night. I've had it for ten years but it has gotten much worse.
Also, I'm reading "THE SUGAR FIX" by Richard Johnson M.D. and learning so much about the sugar "fructose" that is in all of our processed foods. His lecture on Youtube is helpful. I have Metabolic Syndrome/Insulin Resistance and I have to do this for me.