"Well, there are several, but, I would say that 90% of obese people have one [biochemical force that is driving weight gain]... Insulin," Lustig continues.
"Insulin is the energy-storage hormone."
"Insulin's job is to take whatever you're not burning and stored as fat."
Author Gary Taubes talks about the exact same thing in his book "Why We Get Fat".
Lustig says that he believes the increase in obesity in the past 25 years is mostly due to an increase in fructose consumption which causes insulin resistance, which raises insulin levels, which causes the body to convert more calories into fat, which makes people tired and hungry, and makes them fat.
Lustig says that the idea that people have gotten fatter due to a lack of will power is not correct.
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