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Meditation News on Health & Science

Scientists Probe Meditation Secrets

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Scientists are beginning to uncover evidence that meditation has a tangible effect on the brain.

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There is evidence that meditation changes brain structures

Sceptics argue that it is not a practical way to try to deal with the stresses of modern life.

But the long years when adherents were unable to point to hard science to support their belief in the technique may finally be coming to an end.

When Carol Cattley’s husband died it triggered a relapse of the depression which had not plagued her since she was a teenager.

“I instantly felt as if I wanted to die,” she said. “I couldn’t think of what else to do.”

Carol sought medical help and managed to control her depression with a combination of medication and a psychological treatment called Cognitive Behavioural Therapy.

However, she believes that a new, increasingly popular course called Mindfulness Based Cognitive Therapy (MBCT) – which primarily consists of meditation – brought about her full recovery.

It is currently available in every county across the UK, and can be prescribed on the NHS.

One of the pioneers of MBCT is Professor Mark Williams, from the Department of Psychiatry at the University of Oxford.

He helps to lead group courses which take place over a period of eight weeks. He describes the approach as 80% meditation, 20% cognitive therapy.

New perspective

He said: “It teaches a way of looking at problems, observing them clearly but not necessarily trying to fix them or solve them.

“It suggests to people that they begin to see all their thoughts as just thoughts, whether they are positive, negative or neutral.”

MBCT is recommended for people who are not currently depressed, but who have had three or more bouts of depression in their lives.

Trials suggest that the course reduces the likelihood of another attack of depression by over 50%.

Professor Williams believes that more research is still needed.

He said: “It is becoming enormously popular quite quickly and in many ways we now need to collect the evidence to check that it really is being effective.”

However, in the meantime, meditation is being taken seriously as a means of tackling difficult and very modern challenges.

Scientists are beginning to investigate how else meditation could be used, particularly for those at risk of suicide and people struggling with the effects of substance abuse.

What is meditation?

Meditation is difficult to define because it has so many different forms.

Broadly, it can be described as a mental practice in which you focus your attention on a particular subject or object.

It has historically been associated with religion, but it can also be secular, and exactly what you focus your attention on is largely a matter of personal choice.

It may be a mantra (repeated word or phrase), breathing patterns, or simply an awareness of being alive.

Some of the more common forms of meditative practices include Buddhist Meditation, Mindfulness Meditation, Transcendental Meditation, and Zen Meditation.

The claims made for meditation range from increasing immunity, improving asthma and increasing fertility through to reducing the effects of aging.

Limited research

Research into the health claims made for meditation has limitations and few conclusions can be reached, partly because meditation is rarely isolated – it is often practised alongside other lifestyle changes such as diet, or exercise, or as part of group therapy.

So should we dismiss it as quackery? Studies from the field of neuroscience suggest not.

It is a new area of research, but indications are intriguing and suggest that meditation may have a measurable impact on the brain.

In Boston, Massachusetts, Dr Sara Lazar has used a technique called MRI scanning to analyse the brains of people who have been meditating for several years.

She compared the brains of these experienced practitioners with people who had never meditated and found that there were differences in the thickness of certain areas of the brain’s cortex, including areas involved in the processing of emotion.

She is continuing research, but she believes that meditation had caused the brain to change physical shape.

Buddhist monks

In Madison, Wisconsin, Dr Richard Davidson has been carrying out studies on Buddhist monks for several years.

His personal belief is that “by meditating, you can become happier, you can concentrate more effectively and you can change your brain in ways that support that.”

In one study he observed the brains of a group of office workers before and after they undertook a course of meditation combined with stress reduction techniques.

At the end of the course the participants’ brains seemed to have altered in the way they functioned.

They showed greater activity in the left-hand side – a characteristic which Davidson has previously linked to happiness and enthusiasm.

This idea that meditation could improve the wellbeing of everyone, even those not struggling with mental illness, is something that is exciting researchers.

Professor Williams believes it has huge potential.

“It involves dealing with expectations, with constantly judging ourselves – feeling we’re not good enough,” he said.

“And, that is something which is so widespread in our communities.

“All of these things are just thoughts. And, they will come up in meditation and learning to recognize what they are as thoughts, and let them go, can be enormously empowering for anybody.”

There is, of course, a distinct possibility that this research will come to nothing and that interest in meditation will turn out to be a passing fad, but for now this ancient discipline is being taken seriously by scientists as a tool with potential to make each one of us happier and more content.

“By meditating, you can become happier, you can concentrate more effectively and you can change your brain in ways that support that” says Dr Richard Davidson.

Click to see also:->
Meditation ‘brain training’ clues
Meditation ‘good for brain’
How to temper your temper
Misery: the secret to happiness
Meditation
Sources: BBC NEWS:2nd. April.’08

Categories
Pediatric

How To Prevent Diaper Rash

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It has been said that if there were no diapers, there would be no diaper rashes. Even with meticulous care, all infants will occasionally develop an irritated bottom. Preventing the rash is a parent’s goal, but if an infant does get one, home treatment will usually keep the irritation from turning into more than just a nuisance.

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Diaper rashes are actually caused by a combination of factors. First and foremost, the area under a diaper is warm, moist, and poorly ventilated, conditions ideal for the development of a rash. Second, the infant’s outermost layer of skin is soft and thin, making it highly susceptible to injury from bacteria, fungi, and the chemicals found in urine and stool. Third, the sequence of wetting and drying makes the skin more susceptible to the constant rubbing of a diaper against the skin. Add other conditions, such as skin or food allergy, diarrhea, and the use of medications (antibiotics, for example) it’s a wonder that a baby’s bottom is not always irritated.

Remember, diapers are used to keep urine and stool off the infant’s clothes and environment. Since all babies must wear diapers, the best any parent or caregiver can do is to try to prevent a rash from developing. Parents usually discover through trial and error just which diapering routines or products work best for their infant.

Here are some suggestions that will help:

· Never leave a baby alone on the changing table or any surface above the floor. Even a newborn can make a sudden turn and fall. Keep all supplies together in one place so the infant is always attended.

· Make sure the baby is always clean and dry. Promptly change the infant whenever the diaper is wet or soiled and gently clean the area with a soft washcloth. Do not over clean as scrubbing only damages the skin. Avoid harsh soaps – water alone is probably all that is needed. Gently pat the diaper area with a soft towel and leave the area exposed to air for a few minutes before putting on a new diaper. When the skin is completely dry, apply a light diaper cream containing zinc oxide. Although these white creams are not totally necessary, they do create a barrier so that stool and urine will not irritate the skin.

 

  • Choose diapers that have sufficient absorbency to keep the baby dry longer. Some of the new disposable diapers have chemicals that draw moisture away from the skin. These diapers absorb tremendous amounts of fluids – I recently took my 17-month old granddaughter swimming and her diaper weighed more than her when we got out of the pool! Change brands if a particular disposable diapers irritates the child.

  • Keep diapers and outer clothing fitting loose. The tighter the diaper and clothes, the less air gets to the baby’s skin.

  • Talcum powders should not be used. If babies inhale the powder, it can irritate the lungs and cause pneumonia. Cornstarch based powders may be less dangerous, but are not necessary since the new disposable diapers have a smooth inner lining.

Additional measures parents can take once a rash appears include:

 

  • Remove the diapers whenever possible. Fresh air is a great healer and without urine and stool touching the skin, the rash might clear up on its own. To keep any mess to a minimum, place the child diaperless on a surface that is easily washed or lay the baby down on soft towels with a waterproof sheet underneath. When the weather is nice, a few minutes’ exposure to sunshine may be helpful.

  • Disposable diapers can be altered to breathe easier by snipping the elastic bands around the legs in several places. Tearing holes in the plastic liner of the disposable diaper will also help allow more air in.

  • The diapers should be changed even more frequently than before. Until the rash is better, wake the baby up at least once during the night to change a wet diaper.

  • Instead of wiping the baby’s skin with a washcloth, use a running stream of plain water from the sink or a squeeze bottle. A cotton ball dipped in baby oil will gently remove any remaining diaper cream or stool from the irritated skin. Pat the area thoroughly dry before applying a new layer of diaper cream so that the medication does not seal in any moisture.

  • Avoid baby wipes since they contain alcohol, perfumes, and other chemicals that will irritate already inflamed skin. Sometimes the less applied to the baby’s skin the better off the infant will be!

  • Sometimes a diaper rash is caused by a yeast infection. This type of irritation is usually bright red, covers a large area, and is surrounded by red dots. Yeast diaper rashes are frequently seen following bouts of diarrhea or after a child has been on antibiotics. An over-the-counter antiyeast medication, such as MonostatR may be helpful, or see the child’s pediatrician for a prescription cream.

Most diaper rashes can be treated at home and usually clear up in three to five days. However, if the baby’s bottom becomes raw, bleeds, develops blisters or open sores, spreads beyond the diaper area, or causes enough discomfort to interfere with sleep, call the child’s physician for additional advice and help.

While diaper rashes are very common, parents still get upset and when their child’s bottom becomes red and irritated. Neighbors and relatives occasionally make parents feel guilty by reporting that their children never had a diaper rash! Parents should not blame themselves or their baby sitter when their infant develops a diaper rash. It is definitely not a reflection of poor hygiene or lack of care. True, diaper rashes are unsightly and worry parents, but given an infant’s tender skin,they are almost unavoidable!

Click to see also :->Diaper Rash Myths

Sources:KidsGrowth.Com

Categories
News on Health & Science

New Anti-Aging Methods Found

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Researchers said on Thursday they had found more ways to activate the body’s own anti-aging defenses – perhaps with a pill that could fight multiple diseases at once.

Their study, published in the journal Cell, helps explain why animals fed very low-calorie diets live longer, but it also offers new ways to try to replicate the effects of these diets using a pill instead of hunger, the researchers said.

“What we are talking about is potentially having one pill that prevents and even cures many diseases at once,” said David Sinclair, a pathologist at Harvard Medical School who helped lead the research.

Sinclair helped found a company that is working on drugs based on this research, Sirtris Pharmaceuticals. The key is a family of enzymes called sirtuins. They are controlled by genes called SIRT1, SIRT2 and so on.

Last year, researchers showed that stimulating SIRT1 can help yeast cells live longer.

Sinclair, working with colleagues at his company, at Cornell University in New York and the US National Institutes of Health, identified the actions of two more sirtuin genes called SIRT3 and SIRT4.

They found the enzymes controlled by these genes help preserve the mitochondria – little organs inside of cells that provide their energy.

“These two genes, SIRT3 and SIRT4, they make proteins that go into mitochondria. … These are little energy packs inside our cells that are very important for staying healthy and youthful and, as we age, we lose them and they get less efficient,” Sinclair said in a videotaped statement.

“They are also very important for keeping the cells healthy and alive when they undergo stress and DNA damage, as we undergo every day during the aging process.”

Sinclair and colleagues have found in other studies that even if the rest of a cell is destroyed – the nucleus and other parts – it can still function if the mitochondria are alive. His team found that fasting raises levels of another protein called NAD. This, in turn, activates SIRT3 and SIRT4 in the mitochondria of the cell and these help keep the mitochondria youthful.

Source: The Times Of India

Categories
Health Alert

Smoking Damages Lung Cells

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Researchers have revealed that an unexplored mechanism can help explain how forms of oxidative stress, such as exposure to cigarette smoke, damage cells in the lungs.

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Toxins in cigarette smoke, they show, open unpaired hemichannels-small portholes in the cell surface-that can, with very little provocation, turn into major breaches in the cell’s integrity, leading to rapid cell death.

This discovery by researchers from the University of Chicago, the University of California at San Diego and the University of California at Los Angeles, suggests new ways to prevent smoking-related cellular damage and possibly to put the brakes on other diseases tied to oxidative stress, including atherosclerosis, neurodegenerative diseases and even senescence.

“Opening hemichannels allows stressful, often toxic, stimuli to flow directly into cells, overwhelming the delicate and carefully maintained balance within and triggering the signals that induce cell death,” said study author Ratneshwar Lal, PhD, professor of medicine at the University of Chicago.

“We were surprised to find out how little it took to cause such damage, only a small change in membrane electrical properties,” he added, “and by how much damage it could cause,” he added.

Hemichannels form a small-gated pathway from the interior of a cell, through the cell membrane to the cell surface.

They usually connect with an identical hemichannel from an adjoining cell to form a gap junction. By directly connecting two cells, gap junctions enable them to exchange the chemical signals they use to coordinate their activities and maintain metabolic and ionic homeostasis among connected cells in a tissue.

About fifteen years ago, scientists realized that some hemichannels had no partners; they led directly from the cell’s interior to the fluid extracellular space. In 2000, Lal and colleagues showed that cells used these channels to increase their volume, opening as necessary to take in water and calcium ions that allowed cells to reorganise their cytoskeleton and mechanical properties commonly related to cell growth and differentiation.

In this study, they looked at the effects of oxidative stress on unpaired (or non-junctional) hemichannels found in the membrane of cells from the lungs and the heart–the primary targets of cigarette smoke.

When they exposed these cells to low levels of an extract made from cigarette smoke, the non-junctional hemichannels opened. This allowed toxic molecules found in the smoke to flow directly into the cell, and vital metabolites such as ATP and NAD, to leak out, leading, ultimately, to cell injury and death.

Drugs that prevented hemichannels from opening protected the cells from similar exposures. Treating the cells with silencing RNA for the hemichannel protein also protected cells by preventing the creation of these channels.

“It required very little stress to open these channels,. Substances found in smoke and other pollutants can alter the electrical potential of the cell’s membrane. A small shift in the membrane’s electrical potential, which we know occurs in many oxidative stress situations, appears to open these channels and allow unregulated flow. This can weaken and kill cells,” Lal said.

Cells have multiple membrane channels that carefully control the flow of specific small molecules in and out of the cell, including calcium, sodium and potassium ions, each of which passes through a specific type of channel.

Hemichannels, however, with ports nearly twice the size of an ion channel, are not as specific, permitting more rapid, less regulated flow of molecules up to the size of 1000 Daltons–wide enough to allow exchange of many signalling and messenger molecules, such as ATP and small metabolites that are essential for normal cell sustenance.

“We suspect that this mechanism could play a major role in the onset of diseases such as emphysema, which is associated with smoking,” said Lal.”

“Improperly opened hemichannels may play a role in many other diseases tied to environmental stimuli,” Lal said, “or even to normal aging, where oxidative stress is thought to contribute to the gradual accumulation of multiple small damaging hits. Finding and testing drugs or other mechanisms that can selectively block these unpaired channels offers a novel approach to disease prevention,” he added.

Source: The Times Of India

Categories
Yoga

Dhyana Mudra(A Position in Yoga Exercise)

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Posture : Ordinary Sitting or in Padmasana
How to get into the position:
1.Palms are kept open and tips of the thumb and index fingers of both the hands are joined together forming a circle in between them. Remaining 3 fingers are kept together and relaxed. This position of the hands is called Dhyana Mudra.
2. In sitting position wrists of the hands in this Dhyana Mudra posture are kept on the respective knees and palsm facing upwards.

Source:Yogapoint.com

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