Sugar can make you dumb, US scientists warn

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Eating too much sugar can eat away at your brainpower, according to US scientists who published a study Tuesday showing how a steady diet of high-fructose corn syrup sapped lab rats’ memories.

Researchers at the University of California Los Angeles (UCLA) fed two groups of rats a solution containing high-fructose corn syrup — a common ingredient in processed foods — as drinking water for six weeks.

One group of rats was supplemented with brain-boosting omega-3 fatty acids in the form of flaxseed oil and docosahexaenoic acid (DHA), while the other group was not.

Before the sugar drinks began, the rats were enrolled in a five-day training session in a complicated maze. After six weeks on the sweet solution, the rats were then placed back in the maze to see how they fared.

“The DHA-deprived animals were slower, and their brains showed a decline in synaptic activity,” said Fernando Gomez-Pinilla, a professor of neurosurgery at the David Geffen School of Medicine at UCLA.

“Their brain cells had trouble signaling each other, disrupting the rats’ ability to think clearly and recall the route they’d learned six weeks earlier.”

A closer look at the rat brains revealed that those who were not fed DHA supplements had also developed signs of resistance to insulin, a hormone that controls blood sugar and regulates brain function.

“Because insulin can penetrate the blood-brain barrier, the hormone may signal neurons to trigger reactions that disrupt learning and cause memory loss,” Gomez-Pinilla said.

In other words, eating too much fructose could interfere with insulin’s ability to regulate how cells use and store sugar, which is necessary for processing thoughts and emotions.

“Insulin is important in the body for controlling blood sugar, but it may play a different role in the brain, where insulin appears to disturb memory and learning,” Gomez-Pinilla said.

“Our study shows that a high-fructose diet harms the brain as well as the body. This is something new.”

High-fructose corn syrup is commonly found in soda, condiments, applesauce, baby food and other processed snacks.

The average American consumes more than 40 pounds (18 kilograms) of high-fructose corn syrup per year, according to the US Department of Agriculture.

While the study did not say what the equivalent might be for a human to consume as much high-fructose corn syrup as the rats did, researchers said it provides some evidence that metabolic syndrome can affect the mind as well as the body.

“Our findings illustrate that what you eat affects how you think,” said Gomez-Pinilla.

“Eating a high-fructose diet over the long term alters your brain’s ability to learn and remember information. But adding omega-3 fatty acids to your meals can help minimize the damage.”

The study appeared in the Journal of Physiology.

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9 COMMENTS

  1. Hmmm…
    Dats is superb!
    But how can one knw when u are on a high diet of fructose?
    Morever we are human and not rats!
    Pls stop such comparison abeg!!!

  2. Can dis took place in human life?when man is different from rat.and therefore man injection is different from dat of d rat,so i disapproved d fact dat 2much sugar can cos dumb to human being rather it works in rats and rabbits.

  3. To be forewarn is to be forearm.U guyz shouldn’t take this information for granted.Insuline controls the blood sugar and not the brain.when it goes to the brain it does a different thing.according to the information,insuline interferance to the brains activities may lead to distortion of the brain which may result to dumbness.

  4. Let take it because is a fact. When you look at the activity content of suger level in the boby insulin settles most of it, but in this case we are talking about brain. Offcause you know that too much of everything is bad especially when its dealing with internal organs that we dont have control on. So, i will advice we minimise our suger intake.

  5. You guys are saying they can’t compare rat $ human cos ure not into science. Lap rats are use as a standard in all drugs you take today. You must use them $ practicality prove your findings before testing on humans. Thanks so much I knew there’s something not right about sugar.

  6. How many nigerians can come up with this type of experiment. Whenever a truth is been told some ppl termed it facts. Infact I have to take corrections on how I consume sugar. Rat poison can equally kill man.
    Pls be warned.

  7. Guys u hav to heed to this advice.note;man and albino wister rat and guinea pig have same body systen.meanin dat anythng poisonous to dem is also to u,so dont say dat they cnt compare them with man.thanks to God 4 d u.s scientist.thanks to u al..

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