Showing posts with label Fighting. Show all posts
Showing posts with label Fighting. Show all posts

Wednesday, July 25, 2012

Fighting AIDS: US donates an extra $150 million

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Tuesday, July 24, 2012

Fighting AIDS: US donates an extra $150 million

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Monday, July 23, 2012

Fighting obesity with thermal imaging

ScienceDaily (July 18, 2012) — Scientists at The University of Nottingham believe they've found a way of fighting obesity -- with a pioneering technique which uses thermal imaging. This heat-seeking technology is being used to trace our reserves of brown fat -- the body's 'good fat' -- which plays a key role in how quickly our body can burn calories as energy.

See Also:Health & MedicineObesityDiet and Weight LossFitnessMatter & EnergyThermodynamicsMedical TechnologyEnergy TechnologyStrange ScienceReferenceAdipose tissueBrown riceSaturated fatLiposuction

This special tissue known as Brown Adipose Tissue, or brown fat, produces 300 times more heat than any other tissue in the body. Potentially the more brown fat we have the less likely we are to lay down excess energy or food as white fat.

Michael Symonds, Professor of Developmental Physiology in the School of Clinical Sciences, led a team of scientists and doctors at The University of Nottingham who have pioneered the thermal imaging process so we can assess how much brown fat we've got and how much heat it is producing. Their research has just been published in the Journal of Pediatrics.

The University of Nottingham's Early Life Nutrition Research Unit is at the forefront of ground-breaking international research into managing brown adipose tissue using nutrition, exercise, and environmental and therapeutic interventions.

Thermogenic index for food labels

Professor Symonds said: "Potentially the more brown fat you have or the more active your brown fat is you produce more heat and as a result you might be less likely to lay down excess energy or food as white fat.

"This completely non-invasive technique could play a crucial role in our fight against obesity. Potentially we could add a thermogenic index to food labels to show whether that product would increase or decrease heat production within brown fat. In other words whether it would speed up or slow down the amount of calories we burn."

The obesity threat

Obesity is one of the biggest challenges we face in Europe and America as our children grow older. It affects 155 million children worldwide. In the UK the number of overweight children doubled in the 1990s.

Dr Helen Budge, Clinical Associate Professor and Reader in Neonatology, said: "Babies have a larger amount of brown fat which they use up to keep warm soon after birth making our study's finding that this healthy fat can also generate heat in childhood and adolescence very exciting."

Professor Symonds and his team say their ground-breaking research could lead to a better understanding of how brown fat balances the energy from the food we eat with the energy our bodies actually use up.

Professor Symonds, together with Dr Budge and their team from the University's School of Clinical Sciences has shown that the neck region in healthy children produces heat. With the help of local school children they found that this region, which is known to contain brown adipose tissue, rapidly switches on to produce heat. This capacity is much greater in young children compared with adolescents and adults. The researchers are now using their findings to explore interventions designed to promote energy use as heat and, thus, prevent excess weight gain in both children and adults.

Non-invasive technology

Professor Symonds said: "Using our imaging technique we can locate brown fat and assess its capacity to produce heat. It avoids harmful techniques which use radiation and enables detailed studies with larger groups of people. This may provide new insights into the role of brown fat in how we balance energy from the food we eat, with the energy our bodies use up.

This research goes to the heart of the University's biggest ever fund raising appeal, Impact: The Nottingham Campaign, which is supporting lifelong health for children. Additional funding will allow more innovative approaches to be researched, developed and introduced across the globe. Find out more about our research and how you can support us at http://tiny.cc/UoNImpact.

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Friday, July 6, 2012

Why current strategies for fighting obesity are not working

ScienceDaily (July 3, 2012) — As the United States confronts the growing epidemic of obesity among children and adults, a team of University of Colorado School of Medicine obesity researchers concludes that what the nation needs is a new battle plan -- one that replaces the emphasis on widespread food restriction and weight loss with an emphasis on helping people achieve "energy balance" at a healthy body weight.

See Also:Health & MedicineDiet and Weight LossFitnessMind & BrainDieting and Weight ControlNutrition ResearchScience & SocietyEnergy IssuesSportsReferenceAppetiteGeneral fitness trainingOverweightNutrition and pregnancy

In a paper published in the July 3 issue of the journal Circulation, James O. Hill, PhD. and colleagues at the Anschutz Health and Wellness Center take on the debate over whether excessive food intake or insufficient physical activity cause obesity, using the lens of energy balance -- which combines food intake, energy expended through physical activity and energy (fat) storage -- to advance the concept of a "regulated zone," where the mechanisms by which the body establishes energy balance are managed to overcome the body's natural defenses towards preserving existing body weight. This is accomplished by strategies that match food and beverage intake to a higher level of energy expenditure than is typical in America today, enabling the biological system that regulates body weight to work more effectively. Additional support for this concept comes from many studies showing that higher levels of physical activity are associated with low weight gain whereas comparatively low levels of activity are linked to high weight gain over time.

"A healthy body weight is best maintained with a higher level of physical activity than is typical today and with an energy intake that matches," explained Hill, professor of pediatrics and medicine and executive director of the Anschutz Health and Wellness Center at the University of Colorado Anschutz Medical Campus and the lead author of the paper. "We are not going to reduce obesity by focusing only on reducing food intake. Without increasing physical activity in the population we are simply promoting unsustainable levels of food restriction. This strategy hasn't worked so far and it is not likely to work in the future.

As Dr. Hill explains, "What we are really talking about is changing the message from 'Eat Less, Move More" to 'Move More, Eat Smarter.' "

The authors argue that preventing excessive weight gain is a more achievable goal than treating obesity once it is present. Here, the researchers stress that reducing calorie intake by 100 calories a day would prevent weight gain in 90 percent of the adult population and is achievable through small increases in physical activity and small changes in food intake.

People who have a low level of physical activity have trouble achieving energy balance because they must constantly use food restriction to match energy intake to a low level of energy expenditure. Constant food restriction is difficult to maintain long-term and when it cannot be maintained, the result is positive energy balance (when the calories consumed are greater than the calories expended) and an increase in body mass, of which 60 percent to 80 percent is usually body fat. The increasing body mass elevates energy expenditure and helps reestablish energy balance. In fact, the researchers speculate that becoming obese may be the only way to achieve energy balance when living a sedentary lifestyle in a food-abundant environment.

Using an exhaustive review of the energy balance literature as the basis, the researchers also refuted the popular theory that escalating obesity rates can be attributed exclusively to two factors -- the change in the American diet and the rise in overall energy intake without a compensatory increase in energy expenditure. Using rough estimates of increases in food intake and decreases in physical activity from 1971 to 2000, the researchers calculated that were it not for the physiological processes that produce energy balance, American adults would have experienced a 30 to 80 fold increase in weight gain during that period, which demonstrates why it is not realistic to attribute obesity solely to caloric intake or physical activity levels. In fact, energy expenditure has dropped dramatically over the past century as our lives now require much less physical activity just to get through the day. The authors argue that this drop in energy expenditure was a necessary prerequisite for the current obesity problem, which necessitates adding a greater level of physical activity back into our modern lives.

"Addressing obesity requires attention to both food intake and physical activity, said co-author John Peters, PhD., assistant director of the Anschutz Health and Wellness Center. "Strategies that focus on either alone will not likely work."

In addition, the researchers conclude that food restriction alone is not effective in reducing obesity, explaining that although caloric restriction produces weight loss, this process triggers hunger and the body's natural defense to preserve existing body weight, which leads to a lower resting metabolic rate and notable changes in how the body burns calories. As a result, energy requirements after weight loss can be reduced from 170 to 250 calories for a 10 percent weight loss and from 325 to 480 calories for a 20 percent weight loss. These findings provide insight concerning weight loss plateau and the common occurrence of regaining weight after completing a weight loss regimen.

Recognizing that energy balance is a new concept for to the public, the researchers call for educational efforts and new information tools that will teach Americans about energy balance and how food and physical activity choices affect energy balance.

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Thursday, May 31, 2012

Fighting US's worst teen pregnancy rate in Miss.

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Saturday, May 26, 2012

Hormone plays surprise role in fighting skin infections

ScienceDaily (May 23, 2012) — Antimicrobial peptides (AMPs) are molecules produced in the skin to fend off infection-causing microbes. Vitamin D has been credited with a role in their production and in the body's overall immune response, but scientists at the University of California, San Diego School of Medicine say a hormone previously associated only with maintaining calcium homeostasis and bone health is also critical, boosting AMP expression when dietary vitamin D levels are inadequate.

See Also:Health & MedicineVitamin DVitaminCholesterolDietary SupplementDiseases and ConditionsNutritionReferenceB vitaminsVitamin DEssential nutrientDietary mineral

The finding, published in the May 23, 2012 online issue of Science Translational Medicine, more fully explains how the immune system functions in different situations and presents a new avenue for treating infections, perhaps as an alternative to current antibiotic therapies.

The immunological benefits of vitamin D are controversial. In cultured cell studies, the fat-soluble vitamin provides strong immunological benefits, but in repeated studies with humans and animal models, results have been inconsistent: People with low levels of dietary vitamin D do not suffer more infections. For reasons unknown, their immune response generally remains strong, undermining the touted immunological strength of vitamin D.

Working with a mouse model and cultured human cells, Gallo and colleagues discovered why: When levels of dietary vitamin D are low (it's naturally present in very few foods), production of parathyroid hormone (PTH), which normally helps modulate calcium levels in blood, is ramped up. More PTH or a related peptide called PHTrP spurs increased expression of AMPs, such as cathelicidin, which kill a broad spectrum of harmful bacteria, fungi and viruses.

"No one suspected a role for PTH or the PTH-related peptide in immunity," said Richard L. Gallo, MD, PhD, professor of medicine and chief of UCSD's Division of Dermatology and the Dermatology section of the Veterans Affairs San Diego Healthcare System. "This may help resolve some of the controversy surrounding vitamin D. It fills in the blanks."

For example, the findings relate to the on-going debate over sun exposure. Sunlight triggers the production of vitamin D. Low levels of vitamin D have been claimed in some studies to increase the risk of cardiovascular disease and cancer, but other studies have failed to confirm this. On the other hand, high levels of solar exposure that could increase vitamin D have been shown to increase the risk of skin cancer.

"Since sunlight is a carcinogen, it's a bad idea to get too much of it," said Gallo. "PTH goes up when levels of vitamin D from diet and sun exposure are low. PTH may be what permits us to have low D in the diet and not kill ourselves with too much UV radiation."

Gallo said PTH's newly revealed immunological role provides a new connection between the body's endocrine system (a system of glands secreting different regulatory hormones into the bloodstream) and its ability to fight invasive, health-harming pathogens.

While much more work remains to be done, including human studies, it's possible that PTH or PTHrP might eventually become an effective antibiotic treatment without the risk of antibiotic resistance in targeted microbes. One challenge would be how to specifically limit treatment to the targeted infection. "Maybe that could be done by developing the therapy as a cream," Gallo said.

Co-authors of the study are Beda Muehleisen, Carolos Aguilera and George Sen, Division of Dermatology, UC San Diego; Daniel D. Bikle, Department of Medicine and Dermatology, UC San Francisco; Douglas W. Burton, Veterans Administration San Diego Healthcare System; Leonard J. Deftos, Veterans Administration San Diego Healthcare System and Department of Medicine, UC San Diego.

This research has been funded in whole or in part by the National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), under contract number HHSN272201000020C to the Atopic Dermatitis Research Network and grant numbers R01 AI052453 and R01 AI0833358; the National Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH, under grant numbers R01 AR052728; and the Veterans Administration Merit Award (ID:1145995). Additional funding was received from the State of California Tobacco-Related Disease Research Program (#18XT-0182) and the Swiss National Science Foundation (PBZHP3-125571 and PASMP3_140073).

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Thursday, May 10, 2012

Report: Schools key to fighting America's obesity

Fighting obesity will require changes everywhere Americans live, work, play and learn, says a major new report that outlines dozens of options

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Thursday, April 5, 2012

From a Failed Vaccine, New Insights Into Fighting HIV

HealthDay – 2 hrs 26 mins ago WEDNESDAY, April 4 (HealthDay News) -- A new study offers insight into why an HIV vaccine failed to protect most people who received it, but it also points to promising new targets for future vaccine efforts.

Scientists believe an HIV vaccine, designed to prevent infection with the virus that causes AIDS, is still several years away. Tests of experimental vaccines have largely been failures so far.

Nevertheless, the prospect of a vaccine remains tantalizing because it could make a major dent in the spread of HIV and AIDS around the world.

The new research "gives us a handle on how the immune system deals with the virus and is affected by a vaccine," said study lead author Dr. Barton Haynes, director at the Duke Human Vaccine Institute at Duke University in Durham, N.C. "It gives us clues and a firm direction to look into."

The study is based on work by more than 100 scientists from 25 institutions, and appears in the April 5 issue of the New England Journal of Medicine.

Haynes and his colleagues examined the results of a 2009 study of an HIV vaccine in Thailand. In a trial involving more than 16,000 people, the vaccine appeared to cut the risk of infection by only 31 percent. That was still considered a major advance over previous vaccines that didn't work at all, Haynes noted.

The vaccine, called RV144, wasn't ready for prime time because it didn't protect enough people, Haynes said. "You want to get it above 50 percent," he said, and some scientists believe the rate should be even higher than that.

Despite the vaccine's failure, the authors of the new study were able to use the data to learn more about how the immune system deals with HIV and how the vaccine changes the "big picture" of the body's response to the virus.

The new research is an "exhaustive molecular analysis," said Dr. Lindsey Baden, an associate professor of medicine in the infectious disease division at Brigham and Women's Hospital in Boston who co-wrote a commentary accompanying the study.

Haynes said one surprising finding is about an antibody -- a soldier of the immune system -- that helps protect against influenza infection. Ironically, the antibody appears to boost the likelihood of HIV infection, he said.

Another finding was that higher levels of antibodies that home in on a particular region of HIV's outer shell, called V1V2, were associated with lower rates of infection with the virus.

This and other information in the study may help researchers come up with theories about where to go next with vaccine development, Baden said. Among other things, it can reveal parts of the immune system that can be most useful in battling the transmission of HIV.

Vaccines are available to fight other kinds of viruses, such as measles and influenza. HIV is unique, however, because it inserts its genetic material into the body's cells.

"When a person gets infected with HIV, that genetic material goes underground," Haynes said. "It's invisible to the body's immune system."

Another challenge is that the virus mutates, becoming a moving target.

"It changes so rapidly in the person who gets infected that even when the immune system does try to control it, in most people the immune system is always playing catch up," Haynes said.

More information

There's more on HIV/AIDS at the U.S. National Library of Medicine.



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From a Failed Vaccine, New Insights Into Fighting HIV

HealthDay – 2 hrs 26 mins ago WEDNESDAY, April 4 (HealthDay News) -- A new study offers insight into why an HIV vaccine failed to protect most people who received it, but it also points to promising new targets for future vaccine efforts.

Scientists believe an HIV vaccine, designed to prevent infection with the virus that causes AIDS, is still several years away. Tests of experimental vaccines have largely been failures so far.

Nevertheless, the prospect of a vaccine remains tantalizing because it could make a major dent in the spread of HIV and AIDS around the world.

The new research "gives us a handle on how the immune system deals with the virus and is affected by a vaccine," said study lead author Dr. Barton Haynes, director at the Duke Human Vaccine Institute at Duke University in Durham, N.C. "It gives us clues and a firm direction to look into."

The study is based on work by more than 100 scientists from 25 institutions, and appears in the April 5 issue of the New England Journal of Medicine.

Haynes and his colleagues examined the results of a 2009 study of an HIV vaccine in Thailand. In a trial involving more than 16,000 people, the vaccine appeared to cut the risk of infection by only 31 percent. That was still considered a major advance over previous vaccines that didn't work at all, Haynes noted.

The vaccine, called RV144, wasn't ready for prime time because it didn't protect enough people, Haynes said. "You want to get it above 50 percent," he said, and some scientists believe the rate should be even higher than that.

Despite the vaccine's failure, the authors of the new study were able to use the data to learn more about how the immune system deals with HIV and how the vaccine changes the "big picture" of the body's response to the virus.

The new research is an "exhaustive molecular analysis," said Dr. Lindsey Baden, an associate professor of medicine in the infectious disease division at Brigham and Women's Hospital in Boston who co-wrote a commentary accompanying the study.

Haynes said one surprising finding is about an antibody -- a soldier of the immune system -- that helps protect against influenza infection. Ironically, the antibody appears to boost the likelihood of HIV infection, he said.

Another finding was that higher levels of antibodies that home in on a particular region of HIV's outer shell, called V1V2, were associated with lower rates of infection with the virus.

This and other information in the study may help researchers come up with theories about where to go next with vaccine development, Baden said. Among other things, it can reveal parts of the immune system that can be most useful in battling the transmission of HIV.

Vaccines are available to fight other kinds of viruses, such as measles and influenza. HIV is unique, however, because it inserts its genetic material into the body's cells.

"When a person gets infected with HIV, that genetic material goes underground," Haynes said. "It's invisible to the body's immune system."

Another challenge is that the virus mutates, becoming a moving target.

"It changes so rapidly in the person who gets infected that even when the immune system does try to control it, in most people the immune system is always playing catch up," Haynes said.

More information

There's more on HIV/AIDS at the U.S. National Library of Medicine.



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Doctors Detail High Costs of Fighting Malpractice Claims

HealthDay – 2 hrs 26 mins ago WEDNESDAY, April 4 (HealthDay News) -- For doctors defending medical malpractice claims, costs vary widely across specialties and can run into the tens of thousands, even when a patient did not receive a payout, new research shows.

The upshot: Patients end up paying the price in the end, the researchers concluded in their letter published April 5 in the New England Journal of Medicine.

"Higher defense costs and higher malpractice premiums are ultimately passed down to patients through higher physician fees," said co-author Dr. Anupam Jena, a physician at Massachusetts General Hospital, Harvard Medical School, and a senior fellow at the Schaeffer Health Policy Center at the University of Southern California.

According to Jena and his co-authors, cardiologists shell out the most when it comes to malpractice claims -- averaging more than $83,000 for paid claims -- while ophthalmologists spend nearly $24,000 for paid claims.

Expert witnesses, research costs, lawyers' fees and funding overhead costs, such as filing fees, are among the expenses that rack up bills, Jena said.

"The average malpractice claim in our study cost approximately $23,000," he said, adding that the claims that result in payments are more expensive because they take longer to defend, typically up to two years or more.

To come up with defense costs of paid and unpaid malpractice claims by specialty, the authors analyzed costs associated with nearly 27,000 malpractice claims that closed between 1995 and 2005. The claims involved nearly 41,000 physicians who were covered by a national liability insurer.

Jena and his colleagues had examined the same data in a 2011 NEJM study that compared malpractice risk by medical specialty, he said.

"We wanted to follow-up our earlier study by studying the magnitude of defense costs in medical malpractice and to explore how those costs vary by specialty," said Jena.

Why did some specialists rack up defense bills almost four times higher than others? Jena said the chart-toppers, heart and cancer physicians, are more likely to deal with claims linked to a failure to diagnose, and possibly death.

"The damages from malpractice vary, ranging from a missed diagnosis that delays treatment to the unexpected loss of life," he said. "Many cases are complex and those cases can stretch out longer," he said, noting that time is money.

Sonia Suter, an associate professor of law at George Washington University Law School in Washington, D.C., said the letter contains useful information. "It helps inform the ongoing debate about health-care costs and whether or not medical malpractice is contributing to higher costs overall," she said.

"I don't think this letter tells me the whole story, though. It's only one piece of the puzzle," said Suter, adding that she thought obstetrics would have landed higher up on the list. (It's sixth of 25 specialties.)

Dr. Jeffrey Segal is a neurosurgeon and founder and CEO of Medical Justice, a for-profit company that helps physicians deter and manage frivolous medical malpractice lawsuits. He said the letter in NEJM points out not just costs of claims, but the significant number of cases that come through the legal system that aren't won by the patient.

"We see here many claims are coming through that don't have merit. In a perfect legal system, you'd have the dollars going to a patient who is injured by medical negligence," he said. "This reaffirms that it's a system that takes a lot of time and is very expensive."

Segal added, "We've proposed legislation in Florida -- I'm part of a nonprofit that suggests a better way of doing things -- that would help move cases through faster. I'm talking weeks and months instead of years."

Jena said there are some cases where the patient was clearly harmed and, in those cases, it's important that the patient is compensated and compensated early on.

"Waiting two years is not fair," Jena said, and added that a quicker resolution would reduce not just the financial cost to those injured, but the emotional expense as well.

Jena described another solution that might hold promise for reducing malpractice claim costs.

"The University of Michigan hospital system tested a program where they identified errors early on and proactively approached patients and said, 'This is an error that occurred and we apologize, and we'd like to compensate you,'" he said. "Malpractice lawsuits, defense costs, and the time required to resolve claims all went down." He added that this approach of early disclosure needs to be studied further.

Cardiologist Dr. Chip Lavie, medical director of cardiac rehabilitation and prevention at the John Ochsner Heart and Vascular Institute in New Orleans, also weighed in on the new findings.

"I believe if there was substantially less threat of medical malpractice, physicians could practice medicine in a different way, trying to be cost-effective and trying to do the right thing with what is truly best for the patient as opposed to what is the best way to maintain a good defense against any potential subsequent lawsuit," Lavie said.

More information

Visit the Institute of Medicine to see its landmark report on reducing preventable medical errors.



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Sunday, April 1, 2012

Local Entrepreneurs Launch Website and Book -The Charleston Diet- Aimed At Fighting Fat

Local Entrepreneurs Launch Website and Book "The Charleston Diet" Aimed At Fighting FatShare: Tweet02
Dec
2011Local Entrepreneurs Launch Website and Book "The Charleston Diet" Aimed At Fighting FatTwo locals say they have developed a diet plan that can help almost anyone lose up to a pound per day. The book titled "The Charleston Diet" is a personal, educational, and occasionally humorous tale of their struggles with obesity which led them to develop the diet


Charleston-North Charleston, SC (1888PressRelease) December 02, 2011 - Charleston, S.C. - Two Charleston natives, Joshua Cox and Fred Butler Jr., say they have developed a book and diet program that they claim can help almost anyone lose up to a pound per day with no exercise. The Book titled "The Charleston Diet", which launches today, is a personal, educational, and occasionally humorous tale of their development of the diet, the implementation of the diet into their daily lives, and instruction on how others can replicate those methods for similar results.

The two started creating the "hybrid" diet plan earlier this year because they became so overweight that they began suffering from health problems. After being on the diet and seeing their results they began documenting their weight loss and developing the book aimed at helping family and friends who also struggled with their weight. "For us, as well as our family and friends, it was hard to shed the pounds. So we set out to make it easy to lose the unwanted weight" says the diets co-creator and books author Joshua Cox.

The digital copy of the book which is for sale on Amazon.com, Lulu.com, and the TheBookPatch.com retails for $14.99. However due to the book, and its associated website, launching today the digital version of the book is currently available on TheCharlestonDiet.com for only $9.95. Print orders are available locally only and can be purchased by contacting them through their website.

For more information about The Charleston Diet, please visit www.thecharlestondiet.com, call 843-499-5656, or email them at info (

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Friday, March 30, 2012

'Superinfected' Patients Give Clues to Fighting HIV

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