Do you feel sleepy after lunch? Here’s what happens to your brain in a sugar coma
Food & Health  
Hindustan Times

Participants in a study showed reduced attention and response times after consuming glucose or table sugar, compared to those who consumed fruit sugar or artificial sweetener sucralose.

 

Do you feel a little sluggish after eating sugar or a big meal? You are probably feeling the effects of a sugar crash, which may slow down your brain function, a study suggests.
 
In the study, participants demonstrated reduced attention and response times after consuming glucose or table sugar, compared to those who consumed fructose (fruit sugar) or artificial sweetener sucralose (the placebo).
 
“Our study suggests that the ‘sugar coma’ – with regards to glucose – is indeed a real phenomenon, where levels of attention seem to decline after consumption of glucose-containing sugar,” Mei Peng, a lecturer at the University of Otago in New Zealand, told PsyPost. “In particular, how sugar consumption might change the way our brains work. In the case of sweetness perception, we have evolved to favour this taste,” said Peng.
 
The study suggests that the ‘sugar coma’ – with regards to glucose – is indeed a real phenomenon, where levels of attention seem to decline after consumption of glucose-containing sugar.
 
 
Previous research on glucose ingestion has linked it to improved memory performance. However, studies that examined the effect of glucose on other cognitive processes have led to mixed results.
 
In the latest study published in the journal Physiology & Behavior, 49 individuals consumed sweetened drinks containing either glucose, sucrose, fructose, or sucralose before completing three cognitive tests. The tests consisted of a simple response time task and a measurement of arithmetic processing. The researchers also measured the participants’ blood glucose levels during the testing.
 
They found that participants who had consumed glucose or sucrose tended to perform worse on the cognitive tests than those who had consumed fructose or sucralose.
 
 

 
 


 
 


 
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