Is obesity linked to brain size?



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    A study by UCLA showed that obesity affects brain size, with obese people having 8% less brain tissue than those who were healthy. 

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    One study also found that brain size may influence overeating, which leads to obesity. The study found that overweight teens generally had smaller orbitofrontal cortexes than leaner ones. The orbitofrontal cortex is a part of the frontal lobe, which helps monitor impulse control. Though the study proved only a link and not a causal effect, researchers speculate that it could go either way, and that if the smaller frontal lobe was a result of obesity and not the other way around, that it could in turn cause teens to overeat by shrinking the impulse control center of the brain.

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