High-sugar diet is as 'damaging to your brain as extreme stress or ABUSE'
Sugar found to be as damaging as early life stress, scientists discover
Chronic sugar intake triggers changes to hippocampus the area of the brain, which is important for both memory and stress
say changes noted in the brain are of 'great concern' given the high
consumption of sugary drinks, particularly among young people
Jayanthi Maniam and Professor Margaret Morris were involved in the study at the University of New South Wales, Australia
There has been a seismic shift in the dietary landscape in recent years.
Where once fat was the much maligned enemy, now scientists are turning their attention to sugar.
It is now widely accepted that more must be done to encourage people to reduce their sugar intake.
So much so that dietary guidelines in the UK and US have been altered to reflect the changing scientific evidence.
World Health Organization recommends no more than 10 per cent of a
person's daily energy should come from added sugars, or those found
naturally in juices and honey.
That equates to around 50g or 12 teaspoons a day.
the links between a high-sugar diet and obesity are well documented, in
light of the mounting evidence, experts are turning their attention to
the other ways sugar can affect the body.
a recent study, a team at the University of New South Wales in
Australia, found sugar is as damaging to the brain as extreme stress or
Here research associate, Jayanthi Maniam and profressor of pharmacology, Margaret Morris discuss their findings.
We all know that cola and lemonade aren’t great for our waistline or our dental health.
But our new study has shed light on just how much damage sugary drinks can also do to our brain.
changes we observed to the region of the brain that controls emotional
behaviour and cognitive function were more extensive than those caused
by extreme early life stress.
is known that adverse experiences early in life, such as extreme stress
or abuse, increase the risk of poor mental health and psychiatric
disorders later in life.
of traumatic events - accidents; witnessing an injury; bereavement;
natural disasters; physical, sexual and emotional abuse; domestic
violence and being a victim of crime - a child is exposed to is
associated with elevated concentrations of the major stress hormone,
is also evidence that childhood maltreatment is associated with reduced
brain volume and that these changes may be linked to anxiety.
at rats, we examined whether the impact of early life stress on the
brain was exacerbated by drinking high volumes of sugary drinks after
As females are more likely to experience adverse life events, we studied female Sprague-Dawley rats.
model early life trauma or abuse, after rats were born half of the
litters were exposed to limited nesting material from days two to nine
They then returned to normal bedding until they were weaned.
The limited nesting alters maternal behaviour and increases anxiety in the offspring later in life.
weaning, half the rats were given unlimited to access to low-fat chow
and water to drink, while their sisters were given chow, water and a 25
per cent sugar solution that they could choose to drink.
Animals exposed to early life stress were smaller at weaning, but this difference disappeared over time.
Rats consuming sugar in both groups (control and stress) ate more calories over the experiment.
The rats were followed until they were 15 weeks old, and then their brains were examined.
we know that early life stress can impact mental health and function,
we examined a part of the brain called the hippocampus, which is
important for both memory and stress.
groups of rats were studied – control (no stress), control rats
drinking sugar, rats exposed to stress, and rats exposed to stress who
found that chronic consumption of sugar in rats who were not stressed
produced similar changes in the hippocampus as seen in the rats who were
stressed but not drinking sugar.
life stress exposure or sugar drinking led to lower expression of the
receptor that binds the major stress hormone cortisol, which may affect
the ability to recover from exposure to a stressful situation.
Another gene that is important for the growth of nerves, Neurod1, was also reduced by both sugar and stress.
genes important for the growth of nerves were investigated, and just
drinking sugar from a young age was sufficient to reduce them.
rats were exposed to high sugar intakes during development, and the
impact of the sugar is worrying as it may affect brain development,
although further work is required to test this.
this study, combining sugar intake and early life stress did not
produce further changes in the hippocampus, but whether this remains the
case over time is unclear.
in the brain induced by sugar are of great concern given the high
consumption of sugar-sweetened beverages, with particularly high
consumption in children aged nine to 16 years.
similar processes are at play in humans to what was found in our rat
study, reducing the consumption of sugar across the community is
fact that drinking sugar or exposure to early life stress reduced the
expression of genes critical for brain development and growth is of
it is impossible to perform such studies in humans, the brain circuits
controlling stress responses and feeding are conserved across species.
who were exposed to early life trauma have changes in the structure of
their hippocampus. In humans, those consuming the most 'western' diet
had smaller hippocampal volumes, in line with data from animal models.
together, these findings suggest future work should consider possible
long-term effects of high sugar intake, particularly early in life, on
the brain and behaviour.
Je huu ndio Muda uliopanga kubadili Maisha yako leo? Yawezekana ni "Ndio" . Maisha ni mafupi mno hivyo yakupasa kufanya kile ulicho-dhamiria kufanya katika maisha yako. Hamna haja ya kuishi katika maisha ya taabu kila siku "wewe siyo mpumbavu".
Vifuatavyo ni Viashiria sita ni kwa nini unapaswa kubadili Maisha yako Leo! 1.Acha Kuingoja Ijumaa.
Ijumaa huwaa ni nzuri kwa kweli maana wafanya kazi weengi walio ajiriwa hua wanapata ahueni na hata kupumua, Nimekua nikiliona hili katika maisha yangu ya kila siku na nimekua nikitafuta kazi ambayo itakua ikinipaFuraha ya kwelikila siku pasipo kuingojea Ijumaa. Kama umekua ukiishi katika maisha ya kuingojea Furaha ya ijumaa, kwa kweli yakubidi ubadili Life-style yako. Usininukuu vibaya katika hili maana nina sababu ni kwa nini nimesema hivyo..Je kama uliingojea ijumaa kupata furaha yako na ikawa ni kinyume na matarajio yako? We pata tuu picha...
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Baada ya somo hili utajifunza vitu vifuatavyo:-
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Maana kamili ya Furaha
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