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Scientists have discovered that fructose, a naturally [occurrence / ] occurring sugar, is a major [drivel / driver] of obesity. Fructose is also known as "fruit sugar". It occurs to [varying / variety] degrees in fruit and vegetables. It is also used in [processed / procession] form in high fructose corn syrup, which is in a lot of the food we eat, and promotes obesity. A study led [by / of] Dr Richard Johnson at the University of Colorado found that [although / thoroughly] fructose isn't the biggest source [by / of] calorific intake, it stimulates an urge to eat fattier food. Researchers posited a shift of focus on what we eat. They wrote: "[All / Every] hypotheses recognize the importance of reducing 'junk' foods, however it remains unclear [whatsoever / whether] the focus should be [on / at] reducing fructose intake."

Dr Johnson and his colleagues conducted an [exhaustion / exhaustive] study of all known contributors to obesity. They found that the process [on / of] our body converting fructose into energy causes [a / the] drop in the levels of a compound called ATP. When ATP falls, our body [telling / tells] us to eat more. Researchers call this process the fructose survival [hypotheses / hypothesis] . Johnson said: "Fructose is what [triggers / triggering] our metabolism to go into low power mode and [lose / lost] our control of appetite, but fatty foods become the major [source / sauce] of calories that drive weight gain." Scientists have [attributed / contributed] the consumption of high amounts of fructose to health issues. The most common of these is non-alcoholic fatty [river / liver] disease.

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