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Posts Tagged ‘National Academy Of Sciences’

Soluble & Insoluble Fiber: What is the Difference?

QUESTION:

What’s the difference between soluble and insoluble fiber?  Are they both good for you, and how can I include them in my diet?

 

ANSWER:

Dietary fiber, the edible portions of plant cell walls that are resistant to digestion, is an extremely beneficial component of our diets.  Not only does it help ward off many diseases, it has been shown to aid in weight loss by reducing food intake at meals.  This is because fiber-rich foods take longer to digest and thus result in an increased feeling of fullness and satiety.  In addition, the more gradual absorption slows the entrance of glucose into the blood stream, thereby preventing large blood glucose and insulin spikes.…

Mother and newborn baby both die of the same cancer as scientists prove tumours can be caught in the womb

1 Mother and newborn baby both die of the same cancer as scientists prove tumours can be caught in the womb

Normally an embryo’s immune system would recognise and attack cancer cells

Pregnant women can transmit cancer to their unborn babies, British scientists have proved for the first time.

In an ‘extremely rare’ case that challenges conventional wisdom about human biology, a mother with leukaemia passed the blood disease to her daughter.…

'Digital overload' is making us more easily distracted

Digital multi-tasking could be bad for the brain, scientists say. 

A study showed that those who browse the internet while texting friends and listening to music do worse in simple mental tests. 

They are more easily distracted and, ironically, find it harder to switch between tasks than people who concentrate on one thing at a time, the researchers say.…

The 2p blood pressure pill that 'holds multiple sclerosis at bay'

1 The 2p blood pressure pill that 'holds multiple sclerosis at bay'Lisonopril: Could hold key to battling MS

A cheap blood pressure drug could hold the key to combating multiple sclerosis. 

An MS expert has shown that the tablets taken by millions to lower blood pressure can also ease the symptoms – and even reverse paralysis. 

Lawrence Steinman made the link when he researched the Lisinopril pills he was prescribed for high blood pressure. …

Grow your own teeth: Breakthrough in the lab may spell the end of dentures

Scientists have made teeth from stem cells in a world first that could make dentures a thing of the past. 

They looked like normal teeth, were sensitive to pain and chewed food easily. 

While the experiments were on mice, they pave the way for people to ‘grow their own teeth’ as required. …

The Sun Has Spots, Finally

1 The Sun Has Spots, FinallySunspot groups 1024 developed over the 4th of July weekend, and while it did not create any historically spectacular fireworks, it has been kicking up modest solar flares. 

After one of the longest sunspot droughts in modern times, solar activity picked up quickly over the weekend.

A new group of sunspots developed, and while not dramatic by historic standards, the spots were the most significant in many months.…

Lower Increases In Global Temperatures Could Lead To Greater Impacts Than Previously Thought, Study Finds

090223221425 large Lower Increases In Global Temperatures Could Lead To Greater Impacts Than Previously Thought, Study FindsThe “burning embers diagram”: Risks from climate change by reason for concern, 2001 (left) compared with 2007. (Credit: Smith et al., PNAS)

From Science Daily:

ScienceDaily (Mar. 1, 2009) — A new study by scientists updating some of the findings of the Intergovernmental Panel on Climate Change (IPCC) 2001 Third Assessment Report finds that even a lower level of increase in average global temperatures due to greenhouse gas emissions could cause significant problems in five key areas of global concern.…

Genetic Discovery Could Lead To Advances In Dental Treatment

090223221345 large Genetic Discovery Could Lead To Advances In Dental TreatmentA normal mouse tooth on the left, where ameloblast cells that produce enamel are glowing in red. On the right is a tooth with the Ctip2 gene deleted, and little enamel has been able to form. (Credit: Image courtesy of Oregon State University)

From Science Daily:

ScienceDaily (Feb. 24, 2009) — Researchers have identified the gene that ultimately controls the production of tooth enamel, a significant advance that could some day lead to the repair of damaged enamel, a new concept in cavity prevention, and restoration or even the production of replacement teeth.…

Science Found Wanting In U.S. Crime Labs

6for550 Science Found Wanting In U.S. Crime LabsRobert Stinson, convicted of murder in 1984, was freed from a Wisconsin prison last month after tests found that bite-mark and DNA analysis did not match evidence from the crime scene. (Andy Manis/Associated Press)

From International Herald Tribune:

Forensic evidence that has helped convict thousands of defendants for nearly a century is often the product of shoddy scientific practices that should be upgraded and standardized, according to accounts of a draft report by the nation’s pre-eminent scientific research group.…

'Longevity Gene' Common Among People Living To 100 Years Old And Beyond

090203081624 large 'Longevity Gene' Common Among People Living To 100 Years Old And BeyondDr. Friederike Flachsbart (left) and Professor Almut Nebel of the Kiel Institute of Clinical Molecular Biology examining the genetic samples from 100-year-old subjects. (Credit: Copyright: CAU; picture by Sandra Ogriseck)

From Science Daily:

ScienceDaily (Feb. 4, 2009) — A variation in the gene FOXO3A has a positive effect on the life expectancy of humans, and is found much more often in people living to 100 and beyond – moreover, this appears to be true worldwide.…