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Carb-Rich Diet May Affect Brain Health

Even small increases in blood sugar caused by a diet high in carbohydrates can be detrimental to brain health, shows new research

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Carb-rich diet may affect brain health.
Carb-rich diet may affect brain health. Pixabay
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Even small increases in blood sugar caused by a diet high in carbohydrates can be detrimental to brain health, shows new research.

“Carbohydrate calories, which elevate blood glucose, are dramatically more detrimental to human physiology, and specifically to human health, than are calories derived from healthful sources of fat,” claimed David Perlmutter, a neurologist and fellow of the American College of Nutrition.

“We live with this notion that a calorie is a calorie, but at least in terms of brain health, and I believe for the rest of the body as well, there are very big differences between our sources of calories in terms of the impact on our health,” he explained.

Also Read: Less Brain Tissue not Behind Reading Disorder

Perlmutter would explore further how brain health and cognitive function are linked to nutrition, said his article published on the Alternative and Complementary Therapies website.

Recent reports in medical literature link carbohydrate calorie-rich diets to a greater risk for brain shrinkage, dementia and Alzheimer’s disease, impaired cognition and other disorders. (IANS)

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Travelling To Space May Alter Brain, Says Study

Upon return to Earth, this process is then gradually reversed, which then results in a relative reduction of white matter volume

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Keplar, NASA
According to co-author Andrew Casey, it was previously believed that the first stars that formed in the universe could not possibly still exist today. VOA

Spending long periods in space not only leads to muscle atrophy and reductions in bone density, it also has lasting effects on the brain, suggests a study.

The study, led by a team of neuroscientists from the University of Antwerp in Belgium and Ludwig-Maximilians-University (LMU) of Munich, showed that differential changes in the three main tissue volumes of the brain remain detectable for at least half a year after the end of their last mission.

“Our results point to prolonged changes in the pattern of cerebrospinal fluid circulation over a period of at least seven months following the return to Earth,” said professor Peter zu Eulenburg from the LMU.

“However, whether or not the extensive alterations shown in the grey and the white matter lead to any changes in cognition remains unclear at present,” he added.

The study, reported in the New England Journal of Medicine, was carried out on ten cosmonauts, each of whom had spent an average of 189 days on board the International Space Station (ISS).

The magnetic resonance tomography (MRT) scans performed in the days after the return to Earth revealed that the volume of the grey matter was reduced compared to before launch.

ISS Launched First satellite For Cleaning Space Junk
Space travel can alter brain: Study, Pixabay

Seven months later, this effect was partly reversed, but nevertheless still detectable.

In contrast, the volume of the cerebrospinal fluid, which fills the inner and outer cavities of the brain, increased within the cortex during long-term exposure to microgravity.

Further, the white matter tissue volume (those parts of the brain that are primarily made up of nerve fibres) appeared to be unchanged upon investigation immediately after landing.

But, the subsequent examination six months later showed a widespread reduction in volume relative to both earlier measurements.

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In this case, the team postulated that over the course of a longer stint in space, the volume of the white matter may slowly be replaced by an influx of cerebrospinal fluid.

Upon return to Earth, this process is then gradually reversed, which then results in a relative reduction of white matter volume.

According to the researchers, further studies using a wider range of diagnostic methods are deemed essential, to minimise the risks associated with long-term missions and to characterise any clinical significance of the findings. (IANS)