You could easily check the veracity of the research using Google. The problem is that you're afraid that what's written may interfere with your preconceived notions based on junk science, or a lack of scientific understanding altogether. It is a fact that once HFCS is hydrolized in the gut it is no different from sucrose and your body cannot distinguish between them. That being a fact, how can one affect hormone levels while the other does not?
They don't. The link between obesity and HFCS doesn't exist except in the imagination of those who don't grasp basic nutrition and chemistry.