Seguici su acebook facebook Cerca nel sito:

Le ricerche di Gerona 2005

(14-03-09) Another Blow to Magic Bullet Drugs: Statins Impair Brains




by Sherry Baker


Statin drugs can reduce soaring cholesterol levels, according to
countless ads touting these supposed "wonder" drugs, that means they are brimming with health benefits because they lower the risk of cardiovascular disease. The problem is a host of side effects from eye problems and muscle pain to heart arrhythmias and liver disorders have been linked to these widely prescribed medications. Now comes research by an Iowa State University scientist that strongly suggests statins also could be robbing brains of thinking power and memory by doing exactly what they are supposed to do -- reduce cholesterol.

It turns out that statins inhibit not only the liver from making cholesterol but may also block the brain from making cholesterol. That's
a serious consequence, according to Yeon-Kyun Shin, a biophysics professor in the department of biochemistry, biophysics and molecular biology at Iowa State, because cholesterol is vital for healthy and optimum brain function. "If you deprive cholesterol from the brain, then you directly affect the machinery that triggers the release of neurotransmitters. Neurotransmitters affect the data-processing and memory functions. In other words, how smart you are and how well
you remember things," said Dr. Shin in a statement to the media.

In a study published in the February issue of the journal Proceedings of the National Academy of Sciences, Dr. Shin and colleagues tested the activity of the neurotransmitter-release processes of brain cells without cholesterol present to see how well they functioned. Then cholesterol was placed in the system and the scientists measured the transmitter function again. The result? Cholesterol increased the neurotransmitter function by five times.

"Our study shows there is a direct link between cholesterol and the neurotransmitter release. We know exactly the molecular mechanics of what happens in the cells. Cholesterol changes the shape of the protein to stimulate thinking and memory," Dr. Shin said in the press statement. "If you try to lower the cholesterol by taking medicine that is attacking the machinery of cholesterol synthesis in the liver, that medicine goes to the brain too. And then it reduces the synthesis of
cholesterol which is necessary in the brain."

However, just because cutting down on cholesterol in the brain may mess up memory and cognitive skills, it doesn't mean that more cholesterol in the blood will make you more intelligent and able to remember more facts. That's because no matter how much cholesterol
is in your diet, the cholesterol in the blood doesn't cross over the blood
brain barrier.

In addition, by loading a diet with saturated fat from animal
products and junk food, too much low-density lipoprotein (LDL), often called "bad" cholesterol, can build up in cells and cause hardening of arterial walls contributing to strokes and heart disease -- unless you have enough high-density lipoprotein (HDL), or "good" cholesterol, to keep LDL out of cells.
Fortunately, there are many proven ways to lower the "bad" artery logging cholesterol without resorting to statin drugs. For example, the Mayo Clinic web site notes garlic, ground flaxseed, barley and artichoke extract may be helpful in keeping cholesterol levels in healthy balance.

For more information: NaturalNews
http://www.public.iastate.edu/~nsce...
http://www.naturalnews.com/002692.html
http://www.mayoclinic.com/health/ch...

News

  • (30-08-2018) The electronics in fluorescent bulbs and light emitting diodes (LED), rather than ultraviolet radiation, cause increased malignant melanoma incidence in indoor office workers and tanning bed users

    Leggi tutto

  • (30-08-2018) Mitocondri e peso forma

    Leggi tutto

  • (29-08-2018) Stroke now impacting younger patients as a result of the obesity epidemic; 4 in 10 are now aged 40-69

    Leggi tutto

  • (29-08-2018) Perdere peso non vuol dire perdere osso!

    Leggi tutto

  • (29-08-2018) Brain cholesterol: long secret life behind a barrier.

    Leggi tutto

  • (29-08-2018) Stile di vita sano? Si può, basta usare la fantasia

    Leggi tutto

  • (22-08-2018) Top 10 medical treatments that can make you SICKER than before you took them

    Leggi tutto

  • (22-08-2018) Meno ansia - C’è una associazione tra dieta e disturbi mentali?

    Leggi tutto

  • (22-08-2018) Dietary curcumin supplementation attenuates inflammation, hepatic injury and oxidative damage in a rat model of intra-uterine growth retardation.

    Leggi tutto

  • (22-08-2018) Dopo la gravidanza - Una dieta a basso indice glicemico se serve perdere peso

    Leggi tutto

  • (21-08-2018) Sleep Disturbances Can Be Prospectively Observed in Patients with an Inactive Inflammatory Bowel Disease.

    Leggi tutto

  • (21-08-2018) Anche i neo-papà soffrono della depressione post partum

    Leggi tutto


In evidenza

"L'informazione presente nel sito serve a migliorare, e non a sostituire, il rapporto medico-paziente."

Per coloro che hanno problemi di salute si consiglia di consultare sempre il proprio medico curante.

Informazioni utili