科學家指出糖分可能有害大腦
他們也相信在魚油內發現的一種化學物質可能有助於對抗此影響。
根據加州大學洛杉磯分校的科學家研究指出，高糖分的飲食可能會減少大腦活動量。研究人員相信一種稱為DHA的化學物質將有助於身體對抗糖分的影響。而DHA自然存在於魚油當中。
為了這項研究，一組老鼠被餵食六週的玉米糖漿。其中一半的動物也同時給予一般劑量的DHA。在特殊飲食之前，老鼠接受六天的訓練來走一個特別迷宮。六週以後，牠們被放回迷宮裡，然而結果十分令人驚訝。沒有DHA的動物在迷宮裡移動較為緩慢。
研究小組的戈麥斯皮尼利亞教授指出，沒有得到DHA補充的老鼠已開始對胰島素產生抵抗力。評論這項發現，他說，「胰島素對身體很重要，它會控制血糖，但對大腦卻有不同作用，因為它似乎會干擾記憶和學習。」
Scientists Suggest that Sugar may Harm Your
Brain
They also believe that a chemical found in
fish oils may help combat the effect.
According to a study by scientists from the University of California Los Angeles
For the research, a group of rats were fed a
diet of corn syrup for six weeks. Half the animals were also given regular
doses of DHA. Before they began their special diets,
the rats were trained for six days on navigating a special maze. At the end of
the six-week period, they were put back in the maze, and the results were
startling. The animals that didnt have DHA were much slower in the maze.
Professor Gomez-Pinilla from the research
team noted that the rats which didnt receive the DHA supplements had started to
build a resistance to insulin. Commenting on that finding, he said: 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.
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