Soluble fibre ‘effective in treating irritable bowel syndrome’

London, Aug 28 (ANI): A new study by researchers from Utrecht University in the Netherlands has suggested that a soluble fibre supplement called psyllium should be the first line of attack in treating irritable bowel syndrome (IBS).

In the study, researchers compared adding bran, psyllium and a dummy supplement to sufferers’ diets.

They found psyllium was the most effective, warning that bran may even worsen the symptoms of the condition.

IBS is characterized by abdominal pain and an irregular bowel habit.

Its exact cause is unknown and recommendations for treatment include dietary advice, antidepressants and drug treatments.

Many relying on dietary adjustments still turn to bran in a bid to help improve the way the intestines work.

However, the new study of 275 patients questions the wisdom of this approach.

The researchers gave patients 10g of either psyllium, bran or rice flour twice a day for 12 weeks.

At the end of the study, those on psyllium, a naturally occurring vegetable fibre, reported symptom severity had been reduced by 90 points using a standard scale of rating problems.

For bran it was 58 points and for the placebo group, 49.

The study also showed that patients seemed less tolerant of bran, with more than half of the group dropping out during the trial, mostly because their symptoms worsened.

Soluble fibre can also be found in fruit such as apples and strawberries, as well as barley and oats.

“I think adding psyllium to the diet is the best treatment option to start with. In the study, people did this by adding it to things such as yoghurt and it had a real effect,” the BBC quoted Dr Niek de Wit, one of the researchers, as saying.

The study has been described in the British Medical Journal. (ANI)

Gazing at pictures of cake, chocolates can help women fight flab

London, Aug 18 (ANI): Contrary to popular opinion, pictures of tasty morsels can actually help strengthen self-control in weight-conscious women rather than encouraging them to eat, a new study has found.

Lead researcher Floor Kroese of Utrecht University in the Netherlands insists that the temptation might in fact heighten self-control.

During the study, the researchers recruited 54 female students and showed them a picture of either a slice of chocolate cake or a flower under the guise of a memory test.

The participants were then offered a choice between a chocolate or oatmeal cookie.

The study showed that women shown the cake picture gave a higher priority to their healthy eating intentions than their counterparts shown the flower.

They were also significantly more likely to pick the oatmeal cookie – which earlier tests showed was generally perceived as the healthier option.

“Food temptations do not always trigger indulgence,” New Scientist quoted Kroese, as saying.

“It seems that seeing a food temptation reminded people of their goal to watch their weight, and helped them act accordingly,” Kroese added.

Kroese suggests that sticking pictures of tempting foods on the fridge door may help to bring weight-watching goals to mind.

However she insists that the results can only be applied to women wanting to lose weight.

“In moderation, this positive impact of food temptations will overcome the negative impact – the urge to indulge,” said Ayelet Fishbach of the Booth School of Business at the University of Chicago.

The findings appear in journal Appetite. (ANI)

Mystery of Milky Way’s particle accelerators solved

Munich, June 26 (ANI): With help of a unique “ballistic study” that combines data from ESO’s Very Large Telescope and NASA’s Chandra X-ray Observatory, astronomers have now solved a long-standing mystery of the Milky Way’s particle accelerators.

The study shows that cosmic rays from our galaxy are very efficiently accelerated in the remnants of exploded stars.

Galactic cosmic rays come from sources inside our home galaxy, the Milky Way, and consist mostly of protons moving at close to the speed of light, the “ultimate speed limit” in the Universe.

“It has long been thought that the super-accelerators that produce these cosmic rays in the Milky Way are the expanding envelopes created by exploded stars, but our observations reveal the smoking gun that proves it,” said Eveline Helder from the Astronomical Institute Utrecht of Utrecht University in the Netherlands, the first author of the new study.

“You could even say that we have now confirmed the caliber of the gun used to accelerate cosmic rays to their tremendous energies,” said collaborator Jacco Vink, also from the Astronomical Institute Utrecht.

“When a star explodes in what we call a supernova a large part of the explosion energy is used for accelerating some particles up to extremely high energies,” said Helder.

“The energy that is used for particle acceleration is at the expense of heating the gas, which is therefore much colder than theory predicts,” she added.

The researchers looked at the remnant of a star that exploded in AD 185, as recorded by Chinese astronomers.

The remnant, called RCW 86, is located about 8200 light-years away towards the constellation of Circinus (the Drawing Compass). It is probably the oldest record of the explosion of a star.

Using ESO’s Very Large Telescope, the team measured the temperature of the gas right behind the shock wave created by the stellar explosion.

They measured the speed of the shock wave as well, using images taken with NASA’s X-ray Observatory Chandra three years apart.

They found it to be moving at between 10 and 30 million km/h, between 1 and 3 percent the speed of light.

The temperature of the gas turned out to be 30 million degrees Celsius.

This is quite hot compared to everyday standards, but much lower than expected, given the measured shock wave’s velocity. This should have heated the gas up to at least half a billion degrees.

“The missing energy is what drives the cosmic rays,” concluded Vink. (ANI)

Smoking can protect against allergies: Study

Washington, May 15 (ANI): They say smoking is injurious to health, but a new study has revealed that cigarettes can protect from allergies.

The research team from Utrecht University in the Netherlands has shown that cigarette smoke can prevent allergies by decreasing the reaction of immune cells to allergens.

It decreases the allergic response by inhibiting the activity of mast cells, the major players in the immune system’s response to allergens.

The researchers also found that treatment of mast cells with a cigarette smoke-infused solution prevented the release of inflammation-inducing proteins in response to allergens, without affecting other mast cell immune functions.

In the study, the researchers had derived the mast cells from mice, but it is likely that the same anti-allergy effect will hold true in humans.

While taking up smoking to cure allergies is unwise, Neil Thomson, a leading expert in the field of respiratory medicine concludes that the findings presented in this study are “consistent with a dampening of allergic responses in smokers.” (ANI)

Our eyes seek new targets while searching for something

Washington, April 15 (ANI): People’s attention does not return time and again to the objects they have already seen while searching for something, but they tend to shift their eyes to previously fixated locations when performing other visual tasks, according to a study.

Psychologists Michael D. Dodd from the University of Nebraska – Lincoln, Stefan Van der Stigchel of Utrecht University, and Andrew Hollingworth from the University of Iowa tracked eye movements of volunteers as they viewed various scenes, and recorded the location where the eyes were focused at each moment.

The volunteers were divided into four groups, with each group receiving different instructions for scene viewing.

They were told to search the scenes for a specific target, memorize each scene, rate how pleasant the scenes were, or free-view the scenes.

A target appeared in the scene during viewing, and the participants shifted their eyes as quickly as possible to the target. The target either appeared in an old location or a new location.

The researchers observed that the participants’ attention was less likely to return to objects they had already viewed during visual search tasks, but not during other visual tasks.

They said that the volunteers in the search group were slower to shift their eyes to previously fixated locations than to new locations.

However, the subjects in the other three groups exhibited the opposite pattern of eye movements: they were faster to shift their eyes to previously fixated locations than to new locations.

Based on their observations, the researchers came to the conclusion that the “facilitation of return” effect might be “the default setting of the visual system, with inhibition of return representing an exception implemented during visual search.”

The study has been reported in the journal Psychological Science. (ANI)