– does not account for beliefs about food. • Ghrelin is a hormone secreted in the gut – “the hunger hormone". • When ghrelin levels in the stomach rise, that signals the brain that it's time to seek out food. When they drop, hunger subsides old thinking • Scientists thought ghrelin levels fluctuated only in response to nutrients in the stomach. • i.e. put in a big meal, ghrelin responds one way; put in a small snack and it responds another way. Presentation title 20XX 2
labeled as a low-calorie drink called Sensishake — stated as having zero percent fat, zero added sugar and only 140 calories. a rich treat • The other half was put into bottles that were labeled as containing an incredibly rich treat called Indulgence, including enough sugar and fat to account for 620 calories. • In truth, the shakes had 300 calories each. what was tested • levels of ghrelin before and after (in same person) Presentation title 20XX 3
ghrelin levels drop which is tied to increased satiety and lower appetite in addition to a boost in metabolism. negative response • If you only have a small meal, your ghrelin levels don't drop much, appetite stays the same and metabolism doesn't get boosted – you might get hungry again sooner. Presentation title 20XX 4
times more when people were consuming the ‘indulgent’ shake compared to when the same people drank the ‘sensible’ shake (even though both shakes were identical) 20XX 5
they evoke a set of beliefs and actually affect the body's physiological processing of the nutrients that are consumed the paradox • what should you believe to maximize the benefit of “eating healthy”? • believing that you are consuming a nutrient-rich, indulgent meal is actually better for you metabolically • thinking that you are limiting yourself to a restricted, low-calorie meal actually is counterproductive Presentation title 20XX 7
matter • But choices do matter, in terms of which foods you choose to eat – try to make the best choices you can • Not either/or but both/and – avoid dualistic trap 20XX 8