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Does a junk food diet make you lazy? UCLA psychology study offers answer

RATE THIS! +47
Posted in Science on 5th Apr, 2014 11:45 PM by AlexMuller

Life scientists led by UCLA's Aaron Blaisdell placed 32 female rats on one of two diets for six months. The first, a standard rat's diet, consisted of relatively unprocessed foods like ground corn and fish meal. The ingredients in the second included substantially more sugar, a proxy for a junk food diet.

 
After just three months, the researchers observed a significant difference in the amount of weight the rats had gained, with the 16 on the junk food diet having become noticeably fatter.
 
"One diet led to obesity, the other didn't," said Blaisdell, a professor of psychology in the UCLA College of Letters and Science and a member of UCLA's Brain Research Institute.
 
The experiments the researchers performed, Blaisdell said, also suggest that fatigue may result from a junk food diet.
 
As part of the study, the rats were given a task in which they were required to press a lever to receive a food or water reward. The rats on the junk food diet demonstrated impaired performance, taking substantially longer breaks than the lean rats before returning to the task. In a 30-minute session, the overweight rats took breaks that were nearly twice as long as the lean ones.
 
The research is currently online and is scheduled for publication in the April 10 print edition of the journal Physiology and Behavior.
 
After six months, the rats' diets were switched, and the overweight rats were given the more nutritious diet for nine days. This change, however, didn't help reduce their weight or improve their lever responses.

Tags: foodnutritionhealthobesityjunk foodsugardiet

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Comments

Author: Guest
Posted: 2014-04-06
+3
This is an interesting study and observations reported - junk food makes rats performing slow - is what one would anticipate. The big question is how to extrapolate this to humans and what are he options to prevent obesity
3 Replies
Author: Guest
Posted: 2014-04-06
+3
In this article they try to address this and ask " What are the implications for humans? Do people who are overweight become less healthy or do less healthy people become overweight?". They claim that their data suggest that diet-induced obesity is a cause, rather than an effect, of laziness.
3 Replies
Author: Guest
Posted: 2014-04-06
+0
Obesity has become a world-wide epidemic. For the first time in human history, the number of overweight people rivals the number of underweight people Reply
Reply
Author: Guest
Posted: 2014-04-06
+3
Also, researchers claim that the findings are very likely to apply to humans, whose physiological systems are similar to rats. Apparently, junk food diets could make humans — and rats — hungrier. Reply
Reply
Author: Guest
Posted: 2014-04-06
+2
Obesity is a big crisis and it is likely that future projections from several years ago underestimated the number of obese people. Even the estimates that half of the UK population will be obese by 2050 "underestimate" the problem! Big crisis! Reply
Author: Guest
Posted: 2014-04-06
+1
More and more research is showing that being overweight should itself diagnosis for illness or indicator of great possibility of one - take notice, take care!
2 Replies
Author: Guest
Posted: 2014-04-06
+0
I think that this is because consumption of fat, salt and sugar, which has increased globally according, is a significant factor in cardiovascular disease, diabetes and some cancers. Reply
Author: Guest
Posted: 2014-04-06
+1
I think that keeping more closely to a lifestyle that human bodies evolved to experience is the key to tackle this problem - see some previous comments- I agree! Reply
Reply


 

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