Another thing is that these studies don't differentiate between organic prosciutto that is just pork and salt and cheddar cheese stuffed hot dogs with added corn syrup and soybean oil.
Also, though, they can result from increased production of purines, for example high-fructose corn syrup containing beverages could contribute to the formation of uric acid by increasing purine synthesis.
If sugar and high-fructose corn syrup are the cause of obesity, diabetes and insulin resistance, then they're also the most likely dietary trigger of these other diseases.