( ocessed sugar. That new product high-f...)Processed foods – "the" cause of obesity!,Health

ocessed sugar. That new product, high-fructose corn syrup, is a sweetener that affects metabolism in a very negative way," says Lustig.

Fructose is present in several beverages and processed foods, including juices and fruit drinks, barbecue sauce and ketchup, hamburger buns and pretzels. "While fructose tastes like sugar and is used as a sugar, its biochemical structure is different from sugar, which prevents it from being metabolized or broken down as a sugar," he explains.

Lustig sums up on how these biochemical disorders are the root causes of obesity: "The higher your insulin, the more your brain thinks you're starving. The more your brain thinks you're starving, the less you want to exercise and the more you want to eat. This only drives more food intake, which drives your insulin even higher, which interferes with your leptin even more, which makes you think you're starving even more. It's a vicious cycle."

"This is a very different way of looking at obesity," Lustig emphasizes. "While most people blame obesity on a lack of self-discipline, research shows today's foods and drinks actually trigger the behaviors that promote gluttony. Obesity is biochemical, not behavioral."

It means that the government has to be compelled to take stronger measures in educating the public and providing healthy food options.

A researcher with the American Beverage Association said he has his own doubts about Lustig's hypothesis, if only because sugar was a key component of people's diets long time back so many people would have started becoming obese.

"They say people didn't used to drink a lot of soft drinks, but when I was a kid I used to drink Kool-Aid and lemonade. That's basically sugar and water and the flavoring," said Richard Adamson, senior scientific consultant with the American Beverage Association. "The problem is not the sugar. The problem is we have less physical activity."

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