The non-obese and obese groups did not differ in gender distribution, but ethnicity distribution was different at a marginally significant level. β-cell function (DI) and insulin sensitivity (Matsuda ISI) were lower, and insulin secretion was higher, in obese relative to non-obese participants.
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Insulin, Central Dopamine D2 Receptors, and Monetary Reward Discounting in Obesity.
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The sentences
This finding as well as the near-significant relationship between PBF and delayed monetary reward discounting in non-obese women makes it tempting to speculate that non-obese women with relatively high body fat percentage, as observed here with monetary reward, may tend to consume foods that are easily accessible (more certain and more immediate) such as fast food relative to healthier meals that require time to plan and prepare.