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Visa fullständig version : Påverkan på hjärnans belöningssystem av frekvent glassätande


King Grub
2012-02-15, 23:27
Background:

Weight gain leads to reduced reward-region responsivity to energy-dense food receipt, and consumption of an energy-dense diet compared with an isocaloric, low-energy-density diet leads to reduced dopamine receptors. Furthermore, phasic dopamine signaling to palatable food receipt decreases after repeated intake of that food, which collectively suggests that frequent intake of an energy-dense food may reduce striatal response to receipt of that food.

Objective:

We tested the hypothesis that frequent ice cream consumption would be associated with reduced activation in reward-related brain regions (eg, striatum) in response to receipt of an ice cream–based milkshake and examined the influence of adipose tissue and the specificity of this relation.

Design:

Healthy-weight adolescents (n = 151) underwent fMRI during receipt of a milkshake and during receipt of a tasteless solution. Percentage body fat, reported food intake, and food craving and liking were assessed.

Results:

Milkshake receipt robustly activated the striatal regions, yet frequent ice cream consumption was associated with a reduced response to milkshake receipt in these reward-related brain regions. Percentage body fat, total energy intake, percentage of energy from fat and sugar, and intake of other energy-dense foods were not related to the neural response to milkshake receipt.

Conclusions:

Our results provide novel evidence that frequent consumption of ice cream, independent of body fat, is related to a reduction in reward-region responsivity in humans, paralleling the tolerance observed in drug addiction. Data also imply that intake of a particular energy-dense food results in attenuated reward-region responsivity specifically to that food, which suggests that sensory aspects of eating and reward learning may drive the specificity.

Frequent ice cream consumption is associated with reduced striatal response to receipt of an ice cream–based milkshake. Am J Clin Nutr February 15, 2012.

http://www.ajcn.org/content/early/2012/02/14/ajcn.111.027003.full.pdf+html

Fishtank
2012-02-15, 23:39
Så vad är det som orsakar minskningen?
Inte ork att läsa igenom hela via telefonen men antar sockret?

Sent from my GT-I9100 using Tapatalk

maqan
2012-02-16, 13:15
Rätt väntat.

Holabandola
2012-02-16, 18:57
Min son har glass-mani.
Finns inget annat som är så maniskt framkallande som glass för honom. Inte ens godis, choklad, chips el dyl.
PAPPA JAG VILL HA GLAAAASSSSSSSSSSSSSSSSS!!!!
Blir galen ibland.

Har köpt små glassar, så iallafall konsumtionen begränsas när det väl äts glass.
Det äts dock alldeles för mycket glass hos oss.

Fugly
2012-02-16, 19:55
Min son har glass-mani.
Finns inget annat som är så maniskt framkallande som glass för honom. Inte ens godis, choklad, chips el dyl.
PAPPA JAG VILL HA GLAAAASSSSSSSSSSSSSSSSS!!!!
Blir galen ibland.

Har köpt små glassar, så iallafall konsumtionen begränsas när det väl äts glass.
Det äts dock alldeles för mycket glass hos oss.

testa light glass, så får du i alla fall i dig mindre kalorier :)