Sugar can trigger depression, anxiety and stress (3)

研究者稱,調查結果表明整個青少年時期都吃富含高果糖的飲食會加劇抑郁行為.

They may also affect the way the body and brain responds to stress, they added.

他們補充說,這些高果糖飲食可能也會影響機體和大腦對壓力的應對方式.

'Our results offer new insights into the ways in which diet can alter brain health and may lead to important implications for adolescent nutrition and development,' Ms Harrell concluded.

"我們的研究結果對飲食會改變大腦健康以及可能對青少年營養與成長埋下重大隱患提出了新的見解."哈勒爾女士說.

HOW THE BODY REACTS TO FRUCTOSE

機體是怎樣對果糖做出反應的？

Although it is a simple sugar, glucose, rather than fructose is the body's preferred energy source.

雖然葡萄糖只是一種單糖,但是身體最佳的能源卻是葡萄糖而非果糖.

Excess fructose in the body is turned into fat, which can lodge in the liver, leading to non-alcoholic fatty liver disease.

身體中過量的果糖會轉化為脂肪,積累在肝臟中,最終導致非酒精性脂肪肝.

Fructose puts an extra load on the liver, which in turn, prompts a range of problems, including raised levels of fat in the bloodstream.

果糖會對肝臟造成額外負擔,相應的也就導致了血脂升高等一系列問題.

The sugar can also lead to insulin resistance- where the body stops detecting insulin levels in the blood - and so produces even more insulin.

糖類也會導致胰島素抵抗——這時機體停止檢測血液中胰島素含量——因而會分泌更多胰島素.

Insulin resistance is one of the key feature of metabolic syndrome, which could lead to type 2 diabetes, obesity and heart disease.

胰島素抵抗是代謝癥候群的主要特征之一,它會導致2型糖尿病、肥胖和心臟病.

High levels of insulin in the blood also blocks the action of 'hunger hormone' leptin, which tells the brain when fat cells have enough energy.

"饑餓激素"——瘦素,能幫助大腦識別脂肪細胞何時能量充足.血液中高濃度的胰島素同樣會阻礙瘦素作用的發揮.

So high levels of insulin lead to leptin resistance and therefore obesity.

因此,高濃度胰島素會導致瘦素抵抗,肥胖也隨之而來.