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Nov 28
Diabetes Drug Shows Promise in Reducing Risk of Cancer, Study Suggests
An inexpensive drug that treats Type-2 diabetes has been shown to prevent a number of natural and human-made chemicals from stimulating the growth of breast cancer cells, according to a newly published study by a Michigan State University researcher.

The research, led by pediatrics professor James Trosko and colleagues from South Korea's Seoul National University, provides biological evidence for previously reported epidemiological surveys that long-term use of the drug metformin for Type-2 diabetes reduces the risk of diabetes-associated cancers, such as breast cancers.

The research appears in the current edition of PLoS One.

"People with Type-2 diabetes are known to be at high risk for several diabetes-associated cancers, such as breast, liver and pancreatic cancers," said Trosko, a professor in the College of Human Medicine's Department of Pediatrics and Human Development. "While metformin has been shown in population studies to reduce the risk of these cancers, there was no evidence of how it worked."

For the study, Trosko and colleagues focused on the concept that cancers originate from adult human stem cells and that there are many natural and human-made chemicals that enhance the growth of breast cancer cells.

Using culture dishes, they grew miniature human breast tumors, or mammospheres, that activated a certain stem cell gene (Oct4A). Then the mammospheres were exposed to natural estrogen -- a known growth factor and potential breast tumor promoter -- and human-made chemicals that are known to promote tumors or disrupt the endocrine system.

The team found that estrogen and the chemicals caused the mammospheres to increase in numbers and size. However, with metformin added, the numbers and size of the mammospheres were dramatically reduced. While each of the chemicals enhanced growth by different means, metformin seemed to be able to inhibit their stimulated growth in all cases.

"While future studies are needed to understand the exact mechanism by which metformin works to reduce the growth of breast cancers, this study reveals the need to determine if the drug might be used as a preventive drug and for individuals who have no indication of any existing cancers," he said.

"Though we still do not know the exact molecular mechanism by which it works, metformin seems to dramatically affect how estrogen and endocrine-disrupting chemicals cause the pre-existing breast cancers to grow."

In addition, further research needs to be done with human cultures to see if metformin can reduce the risk of pancreatic and liver cancers in Type-2 diabetics as well, he said.

Nov 26
Shakespeare to help solve the mind-body mystery
Shakespeare was a master at portraying profound emotional upset in the physical symptoms of his characters, and many modern day doctors would do well to study the Bard to better understand the mind-body connection, a researcher says.

Kenneth Heaton, a medical doctor and extensively published author on William Shakespeare's oeuvre, systematically analysed 42 of the author's major works and 46 of those of his contemporaries, looking for evidence of psychosomatic symptoms.

He focused on sensory symptoms other than those relating to sight, taste, the heart, and the gut and found that Shakespeare's portrayal of symptoms such as dizziness and blunted or heightened sensitivity to touch and pain in characters expressing profound emotions was significantly more common than in works by other authors of the time.

"Many doctors are reluctant to attribute physical symptoms to emotional disturbance, and this results in delayed diagnosis, overinvestigation, and inappropriate treatment," Heaton said.

"They could learn to be better doctors by studying Shakespeare. This is important because the so-called functional symptoms are the leading cause of general practitioner visits and of referrals to specialists," he said.

Vertigo, also known as giddiness or dizziness, is expressed by five male characters in 'Taming of the Shrew', 'Romeo and Juliet', 'Henry VI' part 1, 'Cymbeline' and 'Troilus and Cressida'.

The nearest approximation in the work of contemporaries was one incident in John Marston's 'The Malcontent'.

There are at least 11 instances of breathlessness associated with extreme emotion in 'Two Gentlemen of Verona', 'The Rape of Lucrece', 'Venus and Adonis', and 'Troilus and Cressida' as compared with just two in the works of other writers.

Fatigue as a result of grief or distress is a familiar sensation among Shakespeare's characters, most notably in 'Hamlet', 'The Merchant of Venice', 'As You Like It', 'Richard II' and 'Henry IV' part 2.

Disturbed hearing at a time of high emotion occurs in 'King Lear', 'Richard II' and 'King John' while blunted/exaggerated senses are portrayed in 'Much Ado about Nothing', 'Venus and Adonis', 'King Lear', 'Love's Labour's Lost' and 'Coriolanus'.

"Shakespeare's perception that numbness and enhanced sensation can have a psychological origin seems not to have been shared by his contemporaries, none of whom included such phenomena in the works examined," Heaton said.

The Bard also uses coldness and faintness to convey shock, like in 'Romeo and Juliet', 'Titus Andronicus', 'Julius Caesar', 'Love's Labour's Lost', and 'Richard III', significantly more frequently than other writers of the period.

Heaton concludes that his data show that Shakespeare "was an exceptionally body-conscious writer", suggesting that the technique was used to make his characters seem more human and engender greater empathy or raise the emotional temperature of his plays and poems.

Nov 25
New sign of too much stress: Sleep-texting
Day-to-day stress has triggered an unusual habit of sleep texting - where people text messages even while sleeping, according to researchers.

People with this peculiar condition send incoherent messages while asleep to their friends and family - completely unaware of doing it, said researcher Frank Thorne, the Daily Mail reported .

"Patients reported incidents of sleep texting - were advised to leave their mobile phones outside the bedroom, it is one of those things that happen, but it is very rare, and certainly not a common trend," said sleep specialist David Cunnington. He described sleep texting as the result of having too much to do during daytime.

"People are doing so much during a normal day that it makes them feel like they're on call even at night," he explained . "It's so easy to receive emails constantly and get notifications from smartphones, that it becomes difficult for us to separate our waking and sleeping time," he added.

According to him, people struggling to get a quality night's sleep should keep their phones's out of the bedroom.

"If your phone is on the nightstand, then it will be more difficult to have a good night's sleep without feeling compelled to reply to a message or check your Facebook account," he said.

"The key point is that people need to respect their sleep, and make an effort to switch off at night," he added.

Sleep-texting reportedly seems to be the latest fad among today's youth, with increasing numbers of cell phone users text messaging friends while asleep.

Sleep experts said the phenomenon was a natural extension of the younger generation's reliance on modern technology. But they disagree on whether it is possible to send a text while technically being asleep.

Nov 24
Weight loss could be early warning sign of Alzheimer's
People in the earliest stages of Alzheimer's disease are more likely to have a lower body mass index (BMI) than those who did not have the condition, according to a new study.

Previous studies have shown that people who are overweight in middle age are more likely to develop Alzheimer's disease decades later than people at normal weight.

The study examined 506 people with advanced brain imaging techniques and analyses of cerebrospinal fluid to look for biomarkers for Alzheimer's disease, which can be present years before the first symptoms begin.

The study found that in people with no memory or thinking problems and in people with mild cognitive impairment, those who had the Alzheimer's biomarkers were also more likely to have a lower BMI than those who did not have the biomarkers.

For example, 85 percent of the people with mild cognitive impairment who had a BMI below 25 had signs of the beta-amyloid plaques in their brains that are a hallmark of the disease, compared to 48 percent of those with mild cognitive impairment who were overweight.

The relationship was also found in people with no memory or thinking problems.

"These results suggest Alzheimer's disease brain changes are associated with systemic metabolic changes in the very earliest phases of the disease," said study author Jeffrey M. Burns, MD, MS, of the University of Kansas School of Medicine in Kansas City.

"This might be due to damage in the area of the brain called the hypothalamus that plays a role in regulating energy metabolism and food intake.

"Further studies should investigate whether this relationship reflects a systemic response to an unrecognised disease or a long-standing trait that predisposes a person to developing the disease," he added.

The findings have been published in the November 22, 2011, print issue of Neurology, the medical journal of the American Academy of Neurology.

Nov 23
Little overdose of Paracetamol can kill you: Study
Little overdose of paracetamol taken repeatedly over some time can put a person at the risk of dying. The risk is greater in case of a multiple overdose than in a single overdose, a new study says.

Such people do not come to the hospital reporting overdose but because they feel unwell. According to the study, these people need to be identified and treated at the earliest.

The study has been carried out by scientists from the University of Edinburgh and the Scottish Liver Transplantation Unit, Scotland. The results appeared in the British Journal of Clinical Pharmacology on Tuesday.

This kind of overdose or staggered overdose can occur when people have pain and repeatedly take a little more paracetamol than they should, scientists said.

"They haven't taken the sort of single-moment, one-off massive overdoses taken by people who try to commit suicide, but over time the damage builds up, and the effect can be fatal," Dr Kenneth Simpson, the scientist who led the study, said.

Doctors normally assess danger to a patient by testing how much paracetamol is present in the blood. In the cases of single overdose, the blood sample gives valuable information, but people with staggered overdoses may have low levels of paracetamol in their blood even though they are at a high risk of liver failure and death, scientists said.

The team analysed data from 663 patients who had been admitted to a hospital between 1992 and 2008 with paracetamolinduced liver injury. They found that 161 had taken a staggered overdose, usually to relieve common pains such as abdominal or muscular pains, headache and toothache.

"On admission, staggered overdose patients were more likely to have liver and brain problems, require kidney dialysis or help with breathing and were at a greater risk of dying than people who had taken single overdoses," Simpson said.

The outcome for people coming to a hospital more than a day later taking a single overdose was also bad and they were also at a high risk of dying or needing a liver transplant, the scientists said.

"Staggered overdoses or patients presenting themselves late after an overdose need to be closely monitored and considered for the paracetamol antidote, N-acetylcysteine, irrespective of the concentration of paracetamol in their blood," Simpson said.

Since measuring paracetamol in the blood is a poor assessment for a patient's status in cases of staggered overdoses or delayed presentation, doctors must find new ways of assessing whether a patient can be sent home, need medical treatment to counteract the paracetamol, or need to be considered for a liver transplant.

Nov 23
Encephalitis death toll rises to 585 in UP
Gorakhpur: With five more children succumbing to encephalitis in eastern Uttar Pradesh, the death toll in the viral disease has climbed to 585 this year, a senior health official said on Wednesday.

Five children suffering from the disease died in the BRD Medical College hospital here yesterday, Additional Director (Health) Diwakar Prasad said.

As many as 175 encephalitis patients are undergoing treatment in BRD and other hospitals in the region, he said.

Nov 22
Why we forget things midway
If you forget what you were going to do, or get, or find, after entering a room, then blame your doorways. University of Notre Dame Psychology Professor Gabriel Radvansky has suggested that passing through doorways is the cause of these memory lapses.

"Entering or exiting through a doorway serves as an 'event boundary' in the mind, which separates episodes of activity and files them away," Radvansky explained.

kid"Recalling the decision or activity that was made in a different room is difficult because it has been compartmentalized," she stated.

Conducting three experiments in both real and virtual environments, Radvansky's subjects - all college students - performed memory tasks while crossing a room and while exiting a doorway.

In the first experiment, subjects used a virtual environment and moved from one room to another, selecting an object on a table and exchanging it for an object at a different table. They did the same thing while simply moving across a room but not crossing through a doorway.

Radvansky found that the subjects forgot more after walking through a doorway compared to moving the same distance across a room, suggesting that the doorway or "event boundary" impedes one's ability to retrieve thoughts or decisions made in a different room.

The study was published recently in the Quarterly Journal of Experimental Psychology.

Nov 22
Progress achieved in world AIDS treatment
Global AIDS deaths and new HIV infections have each dropped 21 percent since the peak of the AIDS pandemic in 1997, according to a UN report released Monday.

One major factor responsible for the result is that life-saving HIV treatments have become more popular and got to 1.35 million more people in 2010 than in 2009.

In middle-income and underdeveloped nations, these treatments have saved 2.5 million lives since 1995.

"We have seen a massive scale-up in access to HIV treatment, which has had a dramatic effect on the lives of people everywhere," said Michel Sidibe, executive director of the U.N. AIDS program.

However, 53 percent of people who need HIV/AIDS treatments -- about 7.6 million people -- cannot get them, which accounted for 1.8 million AIDS deaths in 2010.

There are now 34 million people living with HIV. And just in last year there were 2.7 million new infections.

The decline in deaths and new infections means the AIDS pandemic is at a turning point, the UNAIDS report argues, adding smart investment can save millions of future deaths.

Nov 19
Truth about Vitamin D
Vitamin D is not a vitamin but indeed a hormone. Vitamin D was discovered nearly a hundred years ago and since then, several claims have been made of its role in areas other than bone and calcium metabolism. In the 1920s, it was found that a compound in cod liver oil prevented childhood rickets, a condition associated with severe bone deformities and mobility. This substance was later named Vitamin D, since vitamins A, B, and C were already known by then.

Around the same time, it was also found that ultraviolet radiation helped in Vitamin D synthesis, leading the public at large to expose themselves to sunlight, believing that 'tan is beautiful'. Nearly three decades later, evidence accumulated for adverse effects of excessive sunlight exposure - increased incidence of melanoma and other skin cancers in such individuals.

Awareness about the prevalence of Vitamin D deficiency and the role of its supplementation needs to be emphasised among the medical fraternity and general public. The Department of Pediatrics, Bangalore, Baptist Hospital, Hebbal, and ANBAI and IAP-BPS recently held a medical education programme by Dr P Raghupathy, Prof of Pediatrics at Indira Gandhi Institute of Child Health and eminent Pediatric endocrinologist. The session was chaired by Dr Alexander Thomas, CEO of Bangalore Baptist Hospital and Dr Achamma Thomas, Senior Pediatircian, BBH.

Dr Raghupathy said, "We are all Vitamin D deficient and this is because consumption of normal food does not supply Vitamin D, unless we have milk, butter, margarine, orange juice, specifically fortified with Vitamin D, as it is practised in many developed nations."
The skin is also a poor source for us, as we actively avoid the sun. Besides, pigmentation is also an impediment in facilitating Vitamin D synthesis.

This deficiency is commonly prevalent even in countries where sunshine is normally present throughout the year. For the production of active Vitamin D, well functioning intestines, liver and kidneys are required. Bone formation, calcium and phosphorus levels are dependent on adequacy of Vitamin D. Vitamin D deficiency in infants and young children causes muscle pain, difficulty and delay in standing and walking. Adults may suffer from vague muscle aches and bone pain, and tend to have an increased risk of bone fractures. They may also sway while walking (waddling gait), and may fall frequently.

Cancer of the colon, rectum, prostate and breast are known to develop more often in those who are Vitamin D deficient. Vitamin D is known to cut off blood supply to the malignant cells, thereby killing it. Children and young adults exposed to sunlight and with sufficient level of Vitamin D are known to have considerably lower risk of developing non-Hodgkin's lymphoma. It has been noted that people living in nations at a higher latitude with reduced sunshine have increased risk of cancers involving several organs.

Osteoarthritis, hypertension and cardiovascular diseases occur more often in higher latitudes. Schizophrenia, depression are observed to be less in individuals protected by adequate Vitamin D levels during their intrauterine life. Lung function improves with normal Vitamin D levels, while deficiency is associated with wheezing.

In the elderly, Vitamin D protects them against the risk of falls and fractures. One should also remember that Vitamin D must not be used in excess as it can cause Vitamin D toxicity. Undiagnosed Vitamin D deficiency is common. Vitamin D supplementation is essential for all ages in the right doses, as none of the foods that we normally eat can provide our daily requirement of this important vitamin.

Nov 19
How the U.N. Can Undo Damage From Chronic Disease
More than three of every five people who die today will do so because of a chronic, non-communicable disease ("NCD") such as diabetes, cardiovascular disease, cancer or lung disease. NCDs account for 75 percent of health care spending globally and cause hundreds of billions of dollars in productivity losses in developing countries alone. The human and economic costs are staggering.

Fortunately, the world is taking action. The United Nations just finished its first-ever High-Level Meeting on NCDs, potentially moving the world's most deadly and debilitating diseases to the top of the global agenda -- exactly where they belong.

Until recently, governments, donors and multilateral agencies like the World Health Organization have focused their attention on acute, infectious illnesses rather than NCDs.

Preventing the explosion of NCDs will not be easy. And positive outcomes from the U.N. meeting are unlikely without constructive engagement by the private sector.

In the past, some governments and multilateral agencies have tended to endorse regulation and mandates as the primary solution to global health challenges.

But government intervention isn't enough. The scope of this global health challenge calls for solutions far beyond the scope of any single institution.

Earlier this year, U.N. Secretary General Ban Ki-moon called on the world's businesses to help address NCDs. The private sector stands ready.

Governments, multilateral agencies, academia, non-governmental organizations (NGOs) and the private sector must join forces and pursue a wide range of innovative strategies, including multi-stakeholder partnerships, incentives, education and awareness campaigns to improve the way the world prevents, diagnoses and treats NCDs.

The private sector must make good on its social contract to help. We all share humanitarian concerns about improving public health. Yet businesses also have a vested interest in maintaining healthy and productive workforces. Nearly 50 percent of deaths occur among people in their most productive years.

Businesses also benefit from healthy consumers and economies -- which allow them to fulfill their responsibility to be profitable and competitive.

Delegates to the U.N. meeting must recognize the critical role businesses play in bringing valuable innovations to market, delivering tangible solutions, closing resource gaps and addressing the causes of poor health and disease.

While some NCDs arise from genetic and environmental factors, others result from unhealthy behaviors and lifestyle choices. As a result, they can often be combated with health promotion initiatives. Reducing tobacco, salt, sugar and alcohol consumption and improving diet and physical activity are practical, cost-effective approaches that can make a real difference.

Employers have tremendous power to lead on this front. Many companies have implemented health education and screening programs, no-smoking policies, workplace exercise campaigns, and community outreach initiatives.

Already, more than 40 organizations have joined the Workplace Wellness Alliance. Established by the World Economic Forum, this pioneering program supports the fight against NCDs by promoting best-in-class employee wellness programs through information-sharing and the use of standardized metrics.

Governments, multilateral agencies and donors must also prioritize their efforts, as roughly 80 percent of NCD-related deaths occur in low- or middle-income countries.

In developing countries, overcoming NCDs requires a different approach -- one that starts with establishing basic health systems and primary care infrastructures. Fortunately, we don't need to reinvent the wheel. The global campaign against AIDS, TB, and malaria has already put in place some of the health care infrastructure needed to tackle NCDs.

Partnerships, often led by NGOs and the private sector, have been particularly effective in this area. For example, the Boston-based non-profit Partners in Health, working in collaboration with the Rwandan Ministry of Health, has done a tremendous job controlling infectious diseases in Rwanda. Rwandans now have access to more than 400 health centers, 42 district hospitals, and 45,000 community health workers - and are living longer.

Now, Partners in Health is working with the Rwandan government to create a model for integrating NCD management into this existing primary care infrastructure, helping train nurses and community healthcare workers around a cluster of chronic diseases.

Efforts like this cannot succeed without a committed and diverse group of partners, including many from the private sector. Indeed, the most successful efforts are often powered by governments, NGOs and businesses working together to develop sustainable, locally-driven solutions.

About 36 million people die every year from NCDs. This number is set to increase to 52 million by 2030. That's a major challenge for the global community. Overcoming it will require an enlightened, inclusive approach that embraces and encourages partnerships among public and private organizations. The United Nations' meeting represents the opening volley in that pursuit.

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