Queen delivers 1st Christmas message in 3D

LONDON (AP) — Queen Elizabeth II has hailed the holidays in a new dimension, delivering her Christmas message for the first time in 3D.

In the annual, prerecorded broadcast, the monarch paid tribute to the armed forces, “whose sense of duty takes them away from family and friends” over the holidays, and expressed gratitude for the outpouring of enthusiasm for her Diamond Jubilee celebrations.

The queen said she was struck by the “strength of fellowship and friendship” shown by well-wishers to mark her 60 years on the throne.

“It was humbling that so many chose to mark the anniversary of a duty which passed to me 60 years ago,” she said as footage showed crowds lining the Thames River in the rain earlier this year for a boat pageant. “People of all ages took the trouble to take part in various ways and in many nations.”

The queen also reflected on Britain’s hosting of the Olympic games in 2012, praising the “skill, dedication, training and teamwork of our athletes” and singling out the volunteers who devoted themselves “to keeping others safe, supported and comforted.”

Elizabeth’s message aired shortly after she attended a traditional church service at St. Mary Magdelene Church on her sprawling Sandringham estate in Norfolk.

Wearing a turquoise coat and matching hat, the monarch rode to church in a Bentley, accompanied by granddaughters Beatrice and Eugenie. Her husband, Prince Philip, walked from the house to the church with other members of the royal family.

Three familiar faces were missing from the family outing. Prince William is spending the holiday with his pregnant wife Kate and his in-laws in the southern England village of Bucklebury. Prince Harry is serving with British troops in Afghanistan.

After the church service, the royals usually gather to watch the queen’s prerecorded television broadcast, a tradition that began with a radio address by King George V in 1932.

The queen has made a prerecorded Christmas broadcast on radio since 1952 and on television since 1957. She writes the speeches herself and the broadcasts mark the rare occasion on which the queen voices her own opinion without government consultation.

Her switch to 3D was not the only technological leap for prominent British figures this Christmas.

The Archbishops of Canterbury and York chose to tweet their sermons for the first time, in order to bring Christmas to a new digital audience.

In his speech, Archbishop of Canterbury Rowan Williams said he has been inspired by meeting victims of suffering over the past decade while leading the world’s 80 million-strong Anglican Communion.

Delivering his final Christmas Day sermon from Canterbury Cathedral, Williams also acknowledged how a vote against allowing women to become bishops has damaged the credibility of the church.

Still, he said, it was “startling” to see after the vote how many people “turned out to have a sort of investment in the church, a desire to see the church looking credible and a real sense of loss when — as they saw it — the church failed to sort its business out.”

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Chicken Farms Try Oregano as Antibiotic Substitute

Jessica Kourkounis for The New York Times

Bell & Evans' chickens at a farm in Pennsylvania. Products at Bell & Evans have long been free of antibiotics, contributing to the company’s financial success as consumers have demanded purer foods.

FREDERICKSBURG, Pa. — The smell of oregano wafting from Scott Sechler’s office is so strong that anyone visiting Bell & Evans these days could be forgiven for wondering whether Mr. Sechler has forsaken the production of chicken and gone into pizza.

Oregano lies loose in trays and tied into bunches on tabletops and counters, and a big, blue drum that held oregano oil stands in the corner. “Have you ever tried oregano tea?” Mr. Sechler asked, mashing leaves between his broad fingers.

Off and on over the last three years or so, his chickens have been eating a specially milled diet laced with oregano oil and a touch of cinnamon. Mr. Sechler swears by the concoction as a way to fight off bacterial diseases that plague meat and poultry producers without resorting to antibiotics, which some experts say can be detrimental to the humans who eat the meat. Products at Bell & Evans, based in this town about 30 miles east of Harrisburg, have long been free of antibiotics, contributing to the company’s financial success as consumers have demanded purer foods.

But Mr. Sechler said nothing he had used as a substitute in the past worked as well as oregano oil. “I have worried a bit about how I’m going to sound talking about this,” he said. “But I really do think we’re on to something here.”

Skeptics of herbal medicines abound, as any quick Internet search demonstrates. “Oil of oregano is a perennial one, advertised as a cure for just about everything,” said Scott Gavura, a pharmacist in Toronto who writes for the Web site Science-Based Medicine. “But there isn’t any evidence, there are too many unanswered questions and the only proponents for it are the ones producing it.”

Nonetheless, Mr. Gavura said he would welcome a reduction in the use of antibiotics in animals. At the same time, consumers are growing increasingly sophisticated about the content of the foods they eat.

Data on sales of antibiotic-free meat is hard to come by, but the sales are a tiny fraction of the overall meat market. Sales in the United States of organic meat, poultry and fish, which by law must be raised without antibiotics, totaled $538 million in 2011, according to the Organic Trade Association. By comparison, sales of all beef that year were $79 billion.

Still, retailers like Costco, Whole Foods and Trader Joe’s, as well as some restaurant chains, complain that they cannot get enough antibiotic-free meat.

Noodles & Company, a fast-growing chain of more than 300 restaurants, recently added antibiotic-free pork to the choices of ingredients that customers can add to their made-to-order pastas. It ensured its supply by ordering cuts of meat that were not in relatively high demand and by committing in advance to buy a year’s worth, said Dan Fogarty, its executive vice president for marketing.

“We’re deliberately voting with our pocketbooks,” he said.

In a nationwide telephone survey of 1,000 adults in March, more than 60 percent told the Consumer Reports National Research Center that they would be willing to pay at least 5 cents a pound more for meat raised without antibiotics.

“Before, it was kind of a nice little business, and while it’s still microscopic in the grand scheme of things, we’re seeing acceptance from retailers across the country, not just in California and on the East Coast,” said Stephen McDonnell, founder and chief executive of Applegate, an organic and natural meats company.

Mr. McDonnell said a confluence of trends, from heightened interest in whole and natural foods to growing concerns about medical problems like diabetes, obesity and gluten allergies, were contributing to the demand for antibiotic-free meat.

There is growing concern among health care experts and policy makers about antibiotic resistance and the rise of “superbugs,” bacteria that are impervious to one or more antibiotics. Those bacteria can be passed on to consumers, who eat meat infected with them and then cannot be treated.

In November, the Centers for Disease Control and Prevention and 25 national health organizations and advocacy groups issued a statement on antibiotics that, among other things, called for “limiting the use of medically important human antibiotics in food animals” and “supporting the use of such antibiotics in animals only for those uses that are considered necessary for assuring animal health.”

In 2011, there were several prominent recalls involving bacterial strains that are resistant to antibiotics, including more than 60 million pounds of ground beef contaminated with salmonella Typhimurium and about 36 million pounds of ground turkey spoiled with salmonella Heidelberg.

Consumer Reports released a study last month that found the bacteria Yersinia enterocolitica in 69 percent of 198 pork chop and ground pork samples bought at stores around the country. Some of the bacteria were resistant to one or more antibiotics.

Analysis of Food and Drug Administration data by the Center for Science in the Public Interest found that 80 percent of all antibiotics sold in the United States are used in animals. The majority of those antibiotics are used to spur growth or prevent infections from spreading in the crowded conditions in which most animal production takes place today.

The European Union has banned the use of antibiotics to accelerate growth, and the European Parliament is pushing to end their use as tools to prevent disease as well.

The oregano oil product Mr. Sechler uses, By-O-Reg Plus, is made by a Dutch company, Ropapharm International. In the late 1990s, Bayer conducted trials on the product, known as Ropadiar in Europe, comparing its ability to control diarrhea in piglets caused by E. coli with that of four of the company’s products.

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Two firefighters die in ambush at blazing New York house

A gunman ambushed four volunteer firefighters responding to an intense pre-dawn house fire Monday morning outside Rochester, N.Y., killing two before ending up dead himself, authorities said. Police used an armored vehicle to evacuate more than 30 nearby residents.

The gunman fired at the firefighters when they arrived shortly after 5:30 a.m. at the blaze near the Lake Ontario shore in Webster, town Police Chief Gerald Pickering said. The first Webster police officer who arrived chased the suspect and exchanged gunfire with him, authorities said.

"It does appear it was a trap" for the first responders to the fire, Pickering said at a news conference.

Authorities didn't say how the gunman died or whether anyone might have died in the fire itself.

One of the dead firefighters was also a town police lieutenant; it wasn't clear whether he returned fire. An off-duty police officer who was driving by was injured by shrapnel, Pickering said.

The fire started in one home and spread to two others and a car, officials said. The gunfire initially kept firefighters from battling the blazes. Police say four homes were destroyed and four damaged.

The West Webster Fire District learned of the fire early Monday after a report of a car and house on fire on Lake Road, on a narrow peninsula where Irondequoit Bay meets Lake Ontario, Monroe County Sheriff Patrick O'Flynn said.

The fire appeared from a distance as a pulsating ball of flame glowing against the early morning sky, flames licking into treetops and reflecting on the water, with huge bursts of smoke billowing away in a brisk wind.

Two of the firefighters arrived on a fire engine and two in their own vehicles, Pickering said. After the gunman fired, one of the wounded men managed to flee, but the other three couldn't because of flying gunfire.

A police armored vehicle was used to recover two of the men, and eventually it evacuated 33 people from nearby homes, the police chief said.

The dead men were identified as Police Lt. Michael Chiapperini, 43, the Webster Police Department's public information officer; and Tomasz Kaczowka, also a 911 dispatcher, whose age was not released.

Pickering described Chiapperini as a "lifetime firefighter" with nearly 20 years with the department, and called Kaczowka a "tremendous young man."

The two wounded firefighters, Joseph Hofsetter and Theodore Scardino, were in guarded condition in the intensive care unit at Strong Memorial Hospital, authorities said. Both were awake and alert and are expected to recover.

Hofsetter, also a full-timer with the Rochester Fire Department, was hit once in the pelvis, and the bullet lodged in his spine, authorities said. Scardino was hit in the chest and knee.

Monday's shooting and fires were in a neighborhood of seasonal and year-round homes set close together across the road from the lakeshore. The area is popular with recreational boaters but is normally quiet this time of year.

"We have very few calls for service in that location," Pickering said. "Webster is a tremendous community. We are a safe community, and to have a tragedy befall us like this is just horrendous."

O'Flynn lamented the violence, which comes on the heels of other shootings including the massacre of 20 students and six adults at Sandy Hook Elementary School in Newtown, Conn.

"It's sad to see that that this is becoming more commonplace in communities across the nation," O'Flynn said.

Webster, a middle-class suburb, now is the scene of violence linked to house fires for two Decembers in a row.

Last Dec. 7, authorities say, a 15-year-old boy doused his home with gasoline and set it ablaze, killing his father and two brothers, 16 and 12. His mother and 13-year-old sister escaped with injuries. He is being prosecuted as an adult.

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Army Goes Goth With 'Super-Black' Materials

Get ready to break out the eyeliner and the candelabras, because the Army is going goth.

In its latest round of solicitations for small businesses, the Army is asking for proposals for super-black material. That is, material so black that it absorbs 99 percent of all light. But it isn’t really black paint, exactly. The plan is to use either an “antireflective coating or surface treatment process for metals” to absorb stray light “in the ultraviolet, visible, infrared, and far-infrared regions.” This, the Army hopes, will boost the quality of high-resolution cameras, while also cooling down sensitive electronics. Or to put it another way: The Army needs the color black to reflect its icy-cold heart.

Another curious thing is that the program is being run out of the Army’s Program Executive Office Ammunition at the Picatinny Arsenal, a main center for the Pentagon’s experiments in all sorts of weapons: from rifles and tank cannons to directed-energy weapons. But the purpose of the solicitation isn’t much more specific than described. “Simply put, it’s too early yet to speculate on where the technology(s) will go,” Frank Misurelli, an Army spokesman at Picatinny said in a statement provided to Danger Room. ”Possibly in a few months, after an contract has been awarded, more information may become available.”

But for whatever the Army wants to fade to black, it seems that regular black isn’t good enough. This is because most black paint will absorb only around 90-95 percent of light, with the other 5-10 percent reflected back outwards. For a high-resolution camera, that stray light can bounce back into the lens and interfere with the quality of an image. It’s even a problem for NASA’s ultra-deep-space sensors. In the extreme coldness of space, black paint turns a silver-y color, which increases heat and can interfere with infrared-detecting instruments.

But wait, doesn’t black get really hot when hit with light, like wearing black clothes during the summer? The answer is: sorta. Black is really good at absorbing heat, but is also really good at radiating heat away. This is why cooling fins, radiators and engines for cars and trucks are often painted black. In 2011, NASA developed a carbon-nanotube coating that absorbed between 98-99.5 percent of light, depending on the wavelength. Nor do the coating’s thin layers of nanotubes change color in extreme cold. They absorb more light, and help radiate heat away from instruments, keeping them cold.

The Army could go another route. A second option uncovered by Britain’s National Physical Laboratory involves immersing an object in a solution of nickel and sodium for several hours, which blackens the color, and then taking it out and dunking it in nitric acid for a few seconds. According to New Scientist, this creates an alloy pock-marked with tiny microscopic craters that prevent light from bouncing away.

Finally, the Army also hopes to expand the materials to “optical glass surfaces” — camera lenses, in other words — while testing to see whether “it will be able to survive in a military environment.” The material should also come in “multiple surface colors” and be able to “selectively exhibit earth color instead of broadband absorption.” And another hope is to use the materials to absorb water to cool down equipment. See, it’s tough out there being goth, but it doesn’t mean you can’t do it in comfort.

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Britain’s Queen Elizabeth goes 3D for Olympics tribute

LONDON (Reuters) – Britain‘s Queen Elizabeth will use her traditional Christmas Day message, filmed in 3D for the first time, to pay tribute to the world’s athletes for delivering a “splendid summer of sport” at the London Olympics.

In her personal address to the nation, the monarch will pay tribute to the competitors’ “skill, dedication, training and teamwork”, her office said on Monday.

The 86-year-old head of state provided an Olympic highlight when she made a surprise comic turn with James Bond actor Daniel Craig in a short film for the opening ceremony.

“In pursuing their own sporting goals, they gave the rest of us the opportunity to share something of the excitement and drama,” she will say, according to advance extracts.

Queen Elizabeth missed a church service at her country retreat on Sunday due to a cold, Buckingham Palace said. Her message was pre-recorded and will go out as expected.

It comes at the end of a landmark year for the royal family.

Queen Elizabeth marked 60 years on the throne with the Diamond Jubilee celebrations and her grandson Prince William and his wife Kate are expecting their first baby.

Prime Minister David Cameron issued his own Christmas message in which he talked of Britain’s “extraordinary year”.

“We cheered our queen to the rafters with the Jubilee, showed the world what we’re made of by staging the most spectacular Olympic and Paralympic Games ever and – let’s not forget – punched way above our weight in the medals table,” he said.

The first Christmas broadcast was given by Queen Elizabeth’s grandfather George V in 1932. It has become a Christmas Day tradition for many families to watch it together after lunch.

(Reporting by Peter Griffiths; Editing by Stephen Powell)

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Books: From Bang to Whimper: A Heart Drug’s Story

On June 23, 2005, American medicine managed to take a small step forward and a giant step backward at precisely the same time, with government approval of the first medication to be earmarked for a specific racial group. It was BiDil, a drug designed to treat heart failure in blacks.

Enthusiasts hailed BiDil’s approval by the Food and Drug Administration as a landmark event in the nascent field of pharmacogenomics, which aims to create drugs tailored to fit an individual’s genetic makeup as precisely as a bespoke suit drapes its owner’s shoulders. Critics just winced and clocked one more misstep in medicine’s long history of race-related disasters.

You would think that the elucidation of the human genome would have cleared up most of the hoary untruths surrounding race and health. But as Jonathan Kahn makes clear in his worthy if convoluted review of the events surrounding the birth of BiDil, the genome has in many respects only made things worse.

It has been clear for decades that race has minimal relevance to the body’s inner workings. Research has repeatedly shown that the biologic variations among individuals of the same race are reliably great enough for race to retain little utility as a biologic predictor. You might as well sort people by height. Or, in the words of an editorial writer for Nature Biotechnology in 2005, “Pooling people in race silos is akin to zoologists grouping raccoons, tigers and okapis on the basis that they are all stripy.”

But old misconceptions die hard, particularly for entrepreneurs eagerly awaiting cash bonanzas from the genomic revolution.

Race may be irrelevant; it may be, as Dr. Francis Collins, the director of the National Institutes of Health, put it, “a weak and imperfect proxy” for genetic differences. But it is also a familiar concept — and asking people what race they are is substantially cheaper than genotyping them.

So in a peculiar paradox, race has come to serve in some circles as a crude surrogate for genetic analysis until actual genomic medicine comes along — a temporary bridge from now to later, known to be flawed but still a quasi-legitimate stand-in for the real thing.

Against this background unfolds the story of BiDil, a drama of greed and good intentions.

Several observations prompted the drug’s development. Among them was the common assertion from the last century that blacks with heart failure were more likely to die than whites. (Mr. Kahn does an impressive job of researching and debunking this statistic.) Then there was the belief that blacks often reacted badly to some of the newer drugs used for treating heart failure, and the results of a study dating from the 1980s suggesting that many black patients did well with two old standby drugs.

Those two drugs were (and are) on sale as generics, costing pennies a pill. But just suppose they were combined into a single pill that could be then specifically marketed to patients who just happened to be thought in particular need of effective medication? Now there was a pharmacologic and marketing plan that would extend a lucrative new patent for decades.

And so it came to pass that a collection of eager investors and some of the nation’s foremost cardiologists smiled on the results of an industry-sponsored trial performed on self-identified black subjects with heart failure: The two cheap drugs combined into the not-so-cheap BiDil reduced mortality by 40 percent compared with placebo. This figure was impressive enough to end the trial early and speed BiDil to market.

How did whites do on BiDil? Nobody bothered to check.

Mr. Kahn deserves credit for teasing out all the daunting complexities behind these events, including the details of genetic analysis, the perils of racial determinations and the minutiae of patent law. Unfortunately, though, he suffocates his powerful subject in a dry, repetitive, ponderous read.

A law professor with a doctorate in history and longstanding interest in race issues, Mr. Kahn trudges a partisan path through the drama in which he himself was a player. (He testified before an F.D.A. advisory committee that BiDil should be approved without racial qualifications.)

He heads bravely into many statistical thickets, but omits relevant clinical data; he repeatedly refers to the trial that led to BiDil’s approval, for instance, but I could find its numerical findings nowhere in the book and had to look them up. In a story that fairly drips with potential human interest, he offers the reader not one sip.

The issues raised on every page are so important and so thought-provoking that it would be irresponsible to warn interested readers away. Still, it would be almost as irresponsible to misrepresent the difficulty of the journey.

As it happens, BiDil itself has had a remarkably inglorious career. Despite its much-trumpeted release, patients did not request the medication, and practicing doctors did not prescribe it.

NitroMed, the company that developed it, sponsored no further studies and failed in 2009.

The drug still lingers on the market; Mr. Kahn writes that BiDil may be resurrected in sustained-release form — that other time-honored technique for wringing a few more years from a drug’s patent.

For a parable of early 21st-century medicine, as it treads water between past and future and never hesitates to reach for a buck, it doesn’t get much better than BiDil.

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Raging fire guts Kabul market

KABUL, Afghanistan -- Firefighters battled through the night to contain a raging fire that swept through a market in the Afghan capital.

No injuries were reported, but the blaze destroyed hundreds of stores and millions of dollars worth of merchandise, Afghan police and firefighters said at the scene. 

Dealers at the neighboring currency exchange, the city’s largest, said they evacuated cash, computer equipment and records from their shops as the flames approached during the night. But in the morning, the market was jammed with people haggling over thick stacks of notes as smoke billowed overhead.

Col. Mohammed Qasem, general director of the Kabul fire department, said he suspected an electrical short was to blame for the fire. 

Gas canisters used to heat the stores propelled the flames, along with the cloth and clothing sold by many of the vendors, Qasem said. “It made it very big in a short time.”

Firefighters from the Afghan defense department and NATO forces were sent to assist. But the city’s notorious traffic and the market’s narrow lanes made it difficult for responders to maneuver their vehicles, Qasem said.

Abdulrahman, who like many Afghans has only one name, squatted near a fire truck with his head in his hands  as responders aimed a hose at the blackened ruins of a building still smoldering at noon Sunday, more than 12 hours after the fire broke out.

He said the building had contained three shops that he owned and a warehouse full of glassware, crockery and kitchen utensils. 

“I lost everything,” he said.

Shirali Khan complained that police hadn't allowed him to remove the goods from his four clothing stores.

“They thought we were all robbers,” he said.  “There’s only ashes left.”

ALSO:

Pope pardons former butler convicted of theft

Bombing kills local official, 7 other people in Pakistan

Tensions high as vote on proposed Egyptian constitution continues

Special correspondent Hashmat Baktash contributed to this report.

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Wired Science Space Photo of the Day: Hourglass Nebula

This Hubble telescope snapshot of MyCn18, a young planetary nebula, reveals that the object has an hourglass shape with an intricate pattern of "etchings" in its walls. A planetary nebula is the glowing relic of a dying, Sun-like star.

The results are of great interest because they shed new light on the poorly understood ejection of stellar matter that accompanies the slow death of Sun-like stars. According to one theory on the formation of planetary nebulae, the hourglass shape is produced by the expansion of a fast stellar wind within a slowly expanding cloud, which is denser near its equator than near its poles.

Image: Raghvendra Sahai and John Trauger (JPL), the WFPC2 science team, and NASA [high-resolution]

Caption: Hubble Heritage site

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South Africa’s Mandela responding to treatment in hospital

JOHANNESBURG (Reuters) – Former South African president and anti-apartheid hero Nelson Mandela, who is 94, continues to respond to treatment two weeks after being taken to hospital, the government said on Saturday.

The Nobel Peace laureate, who has been treated for a lung infection and gallstones after being hospitalized on December 8, was visited by South African President Jacob Zuma, presidency spokesman Mac Maharaj said in a statement.

“Madiba has been in hospital since the 8th of December and continues to respond to treatment,” Maharaj said, referring to Mandela by his clan name.

“President Zuma assured him of the love and support of all South Africans, young and old, and the whole world.”

The country’s first black president was admitted to hospital in Pretoria earlier this month after being flown from his home village of Qunu in a remote part of the Eastern Cape province.

It seems likely that Mandela, admired at home and abroad as a global icon against injustice for his lifetime of struggle against minority white rule, will end up spending Christmas in the hospital.

On Thursday, following his re-election as leader of the ruling African National Congress (ANC), Zuma reported Mandela had “steadily improved”.

Zuma said then the former president was receiving “the best care possible” but recalled that Mandela was “at an age where medical challenges require extraordinary care”.

He praised Mandela as an “unparalleled fighter”.

In an interview broadcast on Saturday but recorded a day earlier, the ANC’s newly elected Deputy President Cyril Ramaphosa said he believed Mandela was “on the mend”.

Mandela spent 27 years in apartheid prisons, including 18 years on the windswept Robben Island off Cape Town. He was released in 1990 and went on to use his prestige to push for reconciliation between whites and blacks as the bedrock of the post-apartheid “Rainbow Nation”.

He stepped down in 1999 after one term in office and has been largely removed from public life for the last decade.

Mandela spent time in a Johannesburg hospital in 2011 with a respiratory condition, and again in February this year because of abdominal pains. He was released the following day after a keyhole examination showed there was nothing serious.

He has since spent most of his time in Qunu.

His fragile health prevents him from making any public appearances in South Africa, although he has continued to receive high-profile domestic and international visitors, including former U.S. president Bill Clinton in July.

(Reporting by David Dolan; Editing by Pascal Fletcher)

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News Analysis: The Perils of Yoga for Men

MEN are famous for ignoring aches and pains. It’s macho. Men get physical exams less often than women. They tend to remain silent if worried about their health. When hurt, their impulse is to shun doctors and rely on home remedies, like avoiding heavy lifting to ease backaches. Male athletes play through injuries. It’s all about virility and manliness.

The stereotype has exceptions, of course. But denial of injury and ill health — from the relatively inconsequential to the grave — is common enough that physicians seek ways to encourage men to be more forthcoming.

So it pays to listen carefully when guys start talking about intolerable pain and upended lives. Doing so led me to an unexpected finding that I have confirmed in a trove of federal data. It suggests that yoga can be remarkably dangerous — for men.

Guys who bend, stretch and contort their bodies are relatively few in number, perhaps one in five out of an estimated 20 million practitioners in the United States and 250 million around the globe. But proportionally, they are reporting damage more frequently than women, and their doctors are diagnosing more serious injuries — strokes and fractures, dead nerves and shattered backs. In comparison, women tell mainly of minor upsets.

Men who are breaking the code of silence are doing so with physicians in hospital emergency rooms, who in turn report their findings to the federal government.

Their outspokenness reveals much about modern yoga and suggests ways it can be made safer. As a practitioner since 1970, I know some of the guy hazards personally and have learned through painful experience how to live with my inflexible body.

The male disclosures help explain one of the central mysteries of modern yoga — why it is largely a feminine pursuit. As Yoga Journal, the field’s top magazine, put the question: “Where Are All the Men?”

Science has long viewed the female body as relatively elastic. Now the new disclosures suggest that women who tie themselves in knots also enjoy a lower risk of damage. It seems like common sense.

Surprisingly, evidence of the male danger has, to my knowledge, never before been made public. Nor has its flip side — that women seem less vulnerable. The subject of male risk merits discussion if only because the booming yoga industry has long targeted men as a smart way to expand its franchise.

Informal observations hint at possible explanations. Yoga experts say women tend to see classes as refuges while men see challenges — their goal at times to impress the opposite sex.

Women say men push themselves too far, too fast. Men admit to liking the intensity but say the problem is pushy teachers who force them into advanced poses while urging them to ignore pain.

I stumbled on the issue after my book, published in February, laid out a century and a half of science and, in its chapter on injuries, contradicted the usual image of yoga as completely safe. The yoga establishment makes billions of dollars by selling itself as a path to healthy perfection. Predictably, it responded with sharp denials.

I also received a surprising number of moving replies from injured yogis — male and female — including stroke victims.

A letter initiated my inquiry. In April, a man told how an agonizing back injury had turned his life into “a living hell.” Too many instructors, he wrote, are “pushing us too hard and having us do dangerous poses.”

The “us” resonated.

Suddenly, I realized his cry sounded familiar.

I raced through a correspondence file and saw that many of the letters about serious damage had come from men.

Tara Stiles, a yoga teacher who runs a popular studio in Manhattan, told me that guys have more muscle (one reason for their relative inflexibility) and can thus force themselves into challenging poses they might otherwise find impossible. It seemed a plausible explanation for blinding pain.

Other teachers echoed her analysis and cited supporting anecdotes.

Yoga poses are unisex. But in my research, I found a world of poorly known information on gender disparity.

“Science of Flexibility,” by Michael J. Alter, explained how the pelvic regions of women are shaped in a way that permits an unusually large range of motion and joint play. In yoga, the pelvis is the central pivot for extreme bending of the legs, spine and torso.

In June, I turned to the Consumer Product Safety Commission and its National Electronic Injury Surveillance System, which monitors hospital emergency rooms. In July, officials sent me 18 years of annual survey data that summarized the admission records for yoga practitioners hurt between 1994 and 2011, the maximum available span.

First, I needed a baseline that would let me compare the guy admissions to males doing yoga in the United States. Figures in the yoga literature described men as making up some 10 percent of practitioners at the beginning of the period and 23 percent at the end. So the middle ground seemed to be roughly 16 percent.

Then I dug into the medical data. The analysis took weeks, but the results spoke volumes.

William J. Broad is a science reporter for The New York Times and the author of “The Science of Yoga: The Risks and the Rewards.”

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