Une étude américaine démontre
qu'un régime riche en sucre de synthèse ralentit le fonctionnement cérébral et
altère la mémoire au long terme. « Ce que l'on mange affecte la pensée » , souligne le Dr. Fernando Gomez-Pinilla,
Professeur de neurochirurgie à la faculté de médecine de l'Université de Californie à Los Angeles et principal
auteur de ces recherches.
Selon cette étude publiée le 15 mai 2012 dans la revue
britannique « Journal of
Physiology », une consommation excessive de sucre de
synthèse -- sucre utilisé dans la fabrication de sodas et
d'aliments industriels -- affaiblit les
fonctions du cerveau.
« Il ne s'agit pas ici du fructose naturel se trouvant
dans les fruits, qui sont riches en antioxydants», souligne Dr Gomez-Pinilla ».
Référence & Liens utiles :
Cette recherche effectuée sur des rats illustre
parfaitement le dicton selon lequel ce que l'on mange affecte la pensée. Des recherches précédentes avaient révélé
comment ces sucres, tels que le fructose largement présent dans le sirop de
maïs, peuvent être dévastateurs pour l'organisme et contribuent au diabète
adulte, à l'obésité ou à l'accumulation
de graisses dans le foie.
Mais cette dernière étude est la première à révéler
l'action néfaste de ces édulcorants sur le cerveau. Selon les chercheurs de cette étude, avoir un
régime alimentaire riche en fructose peut à long terme altérer les capacités à apprendre et à mémoriser, mais la
consommation régulière d'acides gras omega-3, dont sont riches certains poissons
ou par exemple les graines de lin, peut aider à minimiser les dommages
provoqués par ce genre de sucres.
Référence &
Liens utiles :
“The journal of
physiology jp”
https://www.ibp.ucla.edu/research/GomezPinilla/TheNeuroLifeLab/Welcome.html UCLA NeuroLife Lab https://www.ibp.ucla.edu/research/GomezPinilla/TheNeuroLifeLab/Welcome.html
in
his very interesting book “How the brain
learns”, David A Sousa, discusses that brain cells consume oxygen and
glucose for fuel.
Low
amounts of oxygen and glucose in the blood can produce lethargy and
sleepiness. The more challenging the
brain’s task, the more fuel it consumes. Therefore, it is important to have
adequate amounts of these substances in the brain for optimum functioning. Eating a moderate portion of food containing
glucose ( fruits are an excellent source) can boost the performance and
accuracy of working memory and attention.
Water
is also essential for healthy brain activity.
It is required to move neuron signals through the brain. Water keeps the lungs sufficiently moist to
allow the efficient transfer of oxygen into the bloodstream.
Drink
plenty of water: 8 ounce glass of water a day for every 25 pounds of body
weight.
Humor
is also important. The normal human
brain loves to laugh. Humor provides
physiological benefit. When we laugh, we
get more oxygen into the bloodstream.
Laughter causes the release of endorphins in the blood. Endorphins are the body natural
painkillers; the person enjoys the
moment in body as in mind. Scientists
have found that humor decreases stress blood pressure, boosts immune system. It also stimulates the brain frontal
lobes. Emotions enhance retention and
increase the degree of focus and the amount of attention time.
http://www.youtube.com/watch?v=UCZxCqUz26Ehttp://www.amazon.com/How-Brain-Learns-David-Sousa/dp/1412936616
Food for thought
Nutrition To Increasing Learning
Resume of article written by Donna M.
Therrien(1)
Consuming baked or broiled fish promotes stronger neurons in the
brain's gray matter by making them larger and healthier. At the University of
California’s Neuro-Life Lab in Los Angeles, studies are being conducted by Dr.
Fernando Gómez-Pinilla, Ph.D.
Amongst others that believe that appropriate changes to a
person’s diet can enhance their cognitive abilities, protect the brain and
counteract the effects of ageing, Dr
Gómez-Pinilla has been studying the effects of food on the brain for years, and
has analyzed more than 160 studies on the effect of food on the brain.
Antioxidants are substances that may protect your cells against the effects of free radicals. Antioxidants such as berries are now commonly known to protect against the effects of aging.
Antioxidants are substances that may protect your cells against the effects of free radicals. Antioxidants such as berries are now commonly known to protect against the effects of aging.
Polyphenols have been shown to reduce oxidative damage and boost
the ability to learn and retain memories.
In particular, these chemicals affect changes in response to different
types of stimulation in the hippocampus, the part of the brain that is
associated with the formation of long-term memories.
Curcumin, found in turmeric is a polyphenol antioxidant that has
been shown to have protective effects, reducing memory deficits in animals with
brain damage. Antioxidants also protect synaptic membranes which -- according
to Dr Gómez-Pinilla--- are the most fragile parts of the brain.
An omega-3 fatty acid called docosahexaenoic acid (DHA) provides
the ability to transport signals at synaptic regions. It also provides neuroplasticity, the ability to change. Such changes are the basis of memory and
learning. Since 30% of nerve-cell
membranes are DHA molecules, keeping your DHA levels up is part of having a
healthy brain.
Studies shown the benefit of omega-3s include improved learning
and memory, ADD and dyslexia. Omega-3s
are found in oily fish such as salmon, as well as in walnuts, flax and kiwi
fruit.
1.Resume
of article written by Donna M. Therrien
http://www.neinspired.com/food_for_thought.html http://www.naturalnews.com/034276_fish_consumption_Alzheimers_disease.html#ixzz1lWdXqUsK
http://www.neinspired.com/food_for_thought.html http://www.naturalnews.com/034276_fish_consumption_Alzheimers_disease.html#ixzz1lWdXqUsK
http://www.ibp.ucla.edu/research/gomezpinilla/TheNeuroLifeLab/Welcome.html: http://www.neinspired.com/food_for_thought.html
" Cyrus Raji, M.D., Ph.D., from the University of
Pittsburgh Medical C
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