In fact, I hate that they've modified corn into a monster.
I miss some of the old varieties.
You can prove it to yourself.
Drink crappy HFSC products and feel how they swell up your liver, then carefully track your weight gain with a good digital scale.
Then don't drink that stuff for a week and your weight will go back down and you will feel better.
I rec. using the new Zero water filter pitcher for the in between clearing portion of the test.
They even give you a digital TDS meter that can be used anywhere(it's only a little bigger than a pen), I got mine at a goodwill store but Wal-Mart etc. sells them. Miles above Pur and Brita.
If you want to go further, then repeat the procedure drink really good sugared product.
After that try the same thing for the same period with diet soda.
You'll be amazed, and maybe you'll get it.
You can feel your liver swell up?