"Great Rotation"- A Wall Street fairy tale?

NEW YORK (Reuters) - Wall Street's current jubilant narrative is that a rush into stocks by small investors has sparked a "great rotation" out of bonds and into equities that will power the bull market to new heights.


That sounds good, but there's a snag: The evidence for this is a few weeks of bullish fund flows that are hardly unusual for January.


Late-stage bull markets are typically marked by an influx of small investors coming late to the party - such as when your waiter starts giving you stock tips. For that to happen you need a good story. The "great rotation," with its monumental tone, is the perfect narrative to make you feel like you're missing out.


Even if something approaching a "great rotation" has begun, it is not necessarily bullish for markets. Those who think they are coming early to the party may actually be arriving late.


Investors pumped $20.7 billion into stocks in the first four weeks of the year, the strongest four-week run since April 2000, according to Lipper. But that pales in comparison with the $410 billion yanked from those funds since the start of 2008.


"I'm not sure you want to take a couple of weeks and extrapolate it into whatever trend you want," said Tobias Levkovich, chief U.S. equity strategist at Citigroup. "We have had instances where equity flows have picked up in the last two, three, four years when markets have picked up. They've generally not been signals of a continuation of that trend."


The S&P 500 rose 5 percent in January, its best month since October 2011 and its best January since 1997, driving speculation that retail investors were flooding back into the stock market.


Heading into another busy week of earnings, the equity market is knocking on the door of all-time highs due to positive sentiment in stocks, and that can't be ignored entirely. The Standard & Poor's 500 Index <.spx> ended the week about 4 percent from an all-time high touched in October 2007.


Next week will bring results from insurers Allstate and The Hartford , as well as from Walt Disney , Coca-Cola Enterprises and Visa .


But a comparison of flows in January, a seasonal strong month for the stock market, shows that this January, while strong, is not that unusual. In January 2011 investors moved $23.9 billion into stock funds and $28.6 billion in 2006, but neither foreshadowed massive inflows the rest of that year. Furthermore, in 2006 the market gained more than 13 percent while in 2011 it was flat.


Strong inflows in January can happen for a number of reasons. There were a lot of special dividends issued in December that need reinvesting, and some of the funds raised in December tax-selling also find their way back into the market.


During the height of the tech bubble in 2000, when retail investors were really embracing stocks, a staggering $42.7 billion flowed into equities in January of that year, double the amount that flowed in this January. That didn't end well, as stocks peaked in March of that year before dropping over the next two-plus years.


MOM AND POP STILL WARY


Arguing against a 'great rotation' is not necessarily a bearish argument against stocks. The stock market has done well since the crisis. Despite the huge outflows, the S&P 500 has risen more than 120 percent since March 2009 on a slowly improving economy and corporate earnings.


This earnings season, a majority of S&P 500 companies are beating earnings forecast. That's also the case for revenue, which is a departure from the previous two reporting periods where less than 50 percent of companies beat revenue expectations, according to Thomson Reuters data.


Meanwhile, those on the front lines say mom and pop investors are still wary of equities after the financial crisis.


"A lot of people I talk to are very reluctant to make an emotional commitment to the stock market and regardless of income activity in January, I think that's still the case," said David Joy, chief market strategist at Columbia Management Advisors in Boston, where he helps oversee $571 billion.


Joy, speaking from a conference in Phoenix, says most of the people asking him about the "great rotation" are fund management industry insiders who are interested in the extra business a flood of stock investors would bring.


He also pointed out that flows into bond funds were positive in the month of January, hardly an indication of a rotation.


Citi's Levkovich also argues that bond investors are unlikely to give up a 30-year rally in bonds so quickly. He said stocks only began to see consistent outflows 26 months after the tech bubble burst in March 2000. By that reading it could be another year before a serious rotation begins.


On top of that, substantial flows continue to make their way into bonds, even if it isn't low-yielding government debt. January 2013 was the second best January on record for the issuance of U.S. high-grade debt, with $111.725 billion issued during the month, according to International Finance Review.


Bill Gross, who runs the $285 billion Pimco Total Return Fund, the world's largest bond fund, commented on Twitter on Thursday that "January flows at Pimco show few signs of bond/stock rotation," adding that cash and money markets may be the source of inflows into stocks.


Indeed, the evidence suggests some of the money that went into stock funds in January came from money markets after a period in December when investors, worried about the budget uncertainty in Washington, started parking money in late 2012.


Data from iMoneyNet shows investors placed $123 billion in money market funds in the last two months of the year. In two weeks in January investors withdrew $31.45 billion of that, the most since March 2012. But later in the month money actually started flowing back.


(Additional reporting by Caroline Valetkevitch; Editing by Kenneth Barry)



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At War Blog: Veterans in College: Share Your Stories

“Graduate, graduate, graduate,” the secretary of veterans affairs, Eric K. Shinseki, recently implored the audience at a conference of the Student Veterans of America. But what, exactly, will it take to ensure that veterans succeed in college?

Since the post-9/11 G.I. Bill took effect in 2009, about 877,000 people, mainly veterans and their dependents, have received tuition and other college benefits costing the government $23.7 billion. More than $10 billion is expected to be spent this year alone on veterans, plus about $560 million on tuition assistance for active-duty troops.

Yet just how those thousands of veterans in college are faring remains a bit of a mystery. Many colleges do not break out graduation and retention numbers for veterans, and the federal government has not tracked the numbers. Only last month, the Department of Veterans Affairs announced a partnership with the National Student Clearinghouse and the Student Veterans of America to collect and analyze data on veterans in school, with an eye to determining if they are succeeding — or failing — and why.

In the latest Education Life, The Times’s education supplement, two articles focus on programs intended to help veterans graduate.
One of them, “A Million Strong,” describes the panoply of programs that colleges have created to support veterans, including opening veterans centers, hiring specially trained counselors and creating veterans-only courses, orientation programs and even housing.

For traditional colleges like San Diego State University or the University of Alabama, creating brick-and-mortar centers where veterans can socialize, receive tutoring or meet counselors is one thing. But for online programs, both nonprofit and for profit, the challenge of assisting veterans and making them feel comfortable can be greater, as colleges like University of Maryland University College are finding.

The key for both traditional and online schools, says Travis L. Martin, a driving force behind a veterans studies program at Eastern Kentucky University and a veteran himself, is introducing students both to other veterans and to those who never served in the armed forces.

“I’ve learned that creating community was key for the veterans,” he said. “Those relationships will keep them in school.”

The second article, “Warrior Voices,” describes how writing workshops are providing many veterans with an alternative means of healing the psychological and spiritual wounds of war.

In writing about war, writing teachers explain, veterans must organize and analyze difficult memories, possibly gaining some control over their traumas along the way. Such was the case with Micah Owen, who served with Travis Martin in Iraq and later became his student at Eastern Kentucky.

Though Mr. Owen, who has post-traumatic stress disorder, says he has trouble talking about his war experiences, he has had no trouble writing about it. “Once the words started coming, I couldn’t stop them,” he said.

The Education Life supplement includes essays and poems from several veterans, including Mr. Martin and Mr. Owen.

Now it’s your turn.

If you are a veteran, send us your memories – about war, deployment, training or the transition to civilian life. The subject areas are wide open; we just ask that you keep your submissions under 700 words. We’ll then select some of the pieces to be published at nytimes.com.

To submit a piece, go to this site and fill out the form.

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BlackBerry 10 installed base to reach 20 million in 2013, Windows Phone to reach 45 million






Despite showing clear promise and being a tremendous upgrade compared to earlier BlackBerry software, BlackBerry 10 didn’t receive the warmest welcome when it was unveiled earlier this week. At least one leading market research firm thinks BlackBerry (RIMM) has done enough to gain some good traction in 2013, however. ABI Research released new estimates this week projecting that the BlackBerry 10 installed base will reach 20 million by the end of 2013. The firm also says Microsoft’s (MSFT) Windows Phone platform, which struggled to garner interest in its early days, will see its installed base climb to 45 million by the end of the year.


[More from BGR: BlackBerry doesn’t need to catch up with Android and iOS overnight, it needs to live to fight another day]






“2013 should be seen as relative success for both Microsoft and BlackBerry,” ABI analyst Aapo Markkanen said. ”For the end of the year, we expect there to be 45 million Windows Phone handsets in use, with BlackBerry 10 holding an installed base of close to 20 million. Microsoft will also have 5.5 million Windows-powered tablets to show for it.”


[More from BGR: GS: Ignore the chatter, BlackBerry rebound is coming]


According to ABI, these figures will be “enough to keep developers interested” as the two companies battle for the No.3 spot in the smartphone war.


“The greatest fear for both Microsoft and BlackBerry is that the initial sales of their smartphones will disappoint and thereby kill off the developer interest, which then would effectively close the window of opportunity on further sales success. Our view is that the installed bases of this scale would be large enough to keep these two in the game,” Markkanen noted. ”It will definitely also help that both firms have actively kept the developers’ interest in mind while designing and rolling out their platforms.”


This article was originally published on BGR.com


Gadgets News Headlines – Yahoo! News




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Steven Tyler Auditions in Drag for American Idol






American Idol










01/31/2013 at 10:35 PM EST







Steven Tyler sings before the AFC Championship NFL football game, Jan, 22, 2012


Elise Amendola/AP


Former judge Steven Tyler made a surprise cameo on American Idol Thursday night – dressed as a woman. Calling himself Pepper LaBeija after the famous drag queen featured in the 1990 documentary Paris Is Burning, Tyler wore a blonde wig, snakeskin miniskirt and fake breasts that honked when squeezed. (There will be no "Dude Looks Like a Lady" jokes because, frankly, he didn't.) Looking eerily like Joan Rivers, Tyler blew kisses at the camera and reduced judge Keith Urban to hysterical laughter.

But Tyler's appearance was actually not the most over-the-top performance on Thursday's show. That distinction belonged to Zoanette Johnson, a 19-year-old Tulsa resident who performed an overblown version of "The Star Spangled Banner." It was unclear whether her audition, which featured exaggerated gestures throughout, was elaborate performance art or an authentic effort at singing. The judges looked ambivalent, too, but then unanimously (though reluctantly?) voted for her to advance to the Hollywood round.

Other odd auditions included Halie Hillburn a 26-year-old singing ventriloquist with a puppet named Oscar. He was either a bear or a dog. Whatever he was, the judges told her to lose Oscar and showcase her strong voice instead. Karl Skinner from Joplin, Mo., performed a fitful version of James Brown's "I Feel Good." His voice was pleasant, but he may be a contestant better in small doses.

There was none of the earlier drama between the judges during the show. Mariah Carey and Nicki Minaj no longer interact, not even to roll their eyes when the other one speaks. It doesn't feel like polite indifference – it feels like a calculated decision to ignore each other. Either way, their lack of drama has allowed for sweeter moments to shine through.

For example: Sign language teacher Nate Tao, who was raised by deaf parents, performed a version of Stevie Wonder's "For Once in My Life" that impressed he judges. "You're unassuming," said Randy Jackson before the panel unanimously put him through. "You looked like you were going to do my taxes."

The last contestant of the night was Kayden Stephenson, a 16-year-old battling cystic fibrosis. Looking years younger than his age – with looks reminiscent of a young Aaron Carter – he performed a nice version of Stevie Wonder's "I Wish." Minaj compared him to a "baby Michael [Jackson]," which may have been an overstatement.

In total, 45 singers from the Oklahoma auditions advanced to the next round. We only got to see five of them – which means there are surely some surprises in store when the show heads to Hollywood next week.

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Hedgehog Alert! Prickly pets can carry salmonella


NEW YORK (AP) — Add those cute little hedgehogs to the list of pets that can make you sick.


In the last year, 20 people were infected by a rare but dangerous form of salmonella bacteria, and one person died in January. The illnesses were linked to contact with hedgehogs kept as pets, according to a report released Thursday by the Centers for Disease Control and Prevention.


Health officials on Thursday say such cases seem to be increasing.


The CDC recommends thoroughly washing your hands after handling hedgehogs and cleaning pet cages and other equipment outside.


Other pets that carry the salmonella bug are frogs, toads, turtles, snakes, lizards, chicks and ducklings.


Seven of the hedgehog illnesses were in Washington state, including the death — an elderly man from Spokane County who died in January. The other cases were in Alabama, Illinois, Indiana, Michigan, Minnesota, Ohio and Oregon.


In years past, only one or two illnesses from this salmonella strain have been reported annually, but the numbers rose to 14 in 2011, 18 last year, and two so far this year.


Children younger than five and the elderly are considered at highest risk for severe illness, CDC officials said.


Hedgehogs are small, insect-eating mammals with a coat of stiff quills. In nature, they sometimes live under hedges and defend themselves by rolling up into a spiky ball.


The critters linked to recent illnesses were purchased from various breeders, many of them licensed by the U.S. Department of Agriculture, CDC officials said. Hedgehogs are native to Western Europe, New Zealand and some other parts of the world, but are bred in the United States.


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Online:


CDC report: http://www.cdc.gov/mmwr


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Asian shares retreat after China PMI, U.S. payrolls eyed

TOKYO (Reuters) - Asian shares wiped earlier gains on Friday as a tepid Chinese manufacturing report dented sentiment, leaving investors on tenterhooks ahead of U.S. nonfarm payroll data due at 1330 GMT.


China's official purchasing managers' index (PMI) eased to 50.4 in January, the National Bureau of Statistics said on Friday, missing market expectations for a rise and underscoring the fragility of the recovery from the economy's weakest year since 1999.


But a separate private survey showed that growth in China's giant manufacturing sector hit a two-year high in January as domestic demand strengthened, underlining hopes the nation's economic recovery is slowly gaining momentum.


"It seems new orders for exports have declined even when new orders overall rose, suggesting that infrastructure spending and other investment to spur domestic demand is needed to keep (China's) economy growing," said Naohiro Niimura, a partner at research and consulting firm Market Risk Advisory.


"But it's not going to change the view about the Chinese economy recovering. The official data was just neither good nor bad."


The MSCI's broadest index of Asia-Pacific shares outside Japan <.miapj0000pus> slipped 0.2 percent from the morning's 0.2 percent gain.


Australian shares <.axjo> were up 0.6 percent, little changed from before the data came out, drawing support from major mining stocks which gained on a jump in iron ore prices.


But the resources-linked Australian dollar fell 0.2 percent to session lows around $1.040.


With Chinese data news done for the day, investors turned to the U.S. nonfarm payrolls report, which is forecast to show a rise of 160,000 jobs and the unemployment rate to remain steady at 7.8 percent.


U.S. stocks edged lower on Thursday on caution ahead of the jobs report, but the benchmark Standard & Poor's 500 Index <.spx> posted its best monthly gain since October 2011 with a 5.1 percent rise and the best January showing since 1997.


Japan's benchmark Nikkei stock average <.n225> outperformed its Asian peers with a 0.2 percent rise, supported by the yen's decline earlier to fresh lows against major currencies.<.t/>


The dollar steadied around 91.75 yen, having earlier risen as high as 91.87, a level not seen since June 2010. The euro touched 125.05, its highest since May 2010. In January alone, the common currency surged nearly 9 percent on the yen, while the dollar was up more than 5 percent.


Oil and copper prices were higher and the euro remained bid against the dollar, reflecting that jitters was not spreading beyond Asian equities as sentiment has recently been underpinned by falling stress in the euro zone and generally improved data globally.


The euro added 0.3 percent to $1.3613 to the dollar, after earlier reaching a fresh 14-month high of $1.3624. The common currency's strength has pushed the dollar index to a one-month low of 79.107 <.dxy> on Friday.


"The euro revival looks set to continue for some time, as investors return to euro zone bond markets, content with the combination of the European Central Bank backstop for sovereign risk and low inflation danger due to lack of economic growth. The dollar bloc looks to be a key loser in the portfolio reallocation back into EUR," Westpac bank said in a note.


U.S. crude futures inched up 0.1 percent to $97.56 a barrel while Brent rose 0.3 percent to $115.90.


London copper added 0.5 percent to $8,203 a tonne.


Earlier, a private survey showed South Korea's manufacturing sector activity marginally shrank in January after a small rise in December but new export orders grew for the first time in eight months.


Manufacturing purchasing managers' indexes from the United States and the euro zone, as well as the Institute for Supply Management's manufacturing index, are also due later in the session.


(Editing by Eric Meijer)



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Explosion in Mexico City Kills at Least 25


Guillermo Gutierrez/Associated Press


Rescue workers dig for survivors after an explosion Thursday in the basement of an administrative building downtown.







MEXICO CITY — A mysterious explosion at the headquarters of Mexico’s state-owned oil company here on Thursday killed at least 25 people and injured 101, according to government officials, as windows shattered, the ground shook and thousands of employees fled into a panicked downtown.




The cause of the explosion was not immediately known. It occurred just before 4 p.m. in the basement of an administrative building next to the 52-story tower of Petroleos Mexicanos, or Pemex. Company officials said there was significant damage to the first floor and mezzanine of the building, and witnesses said they saw rescue workers helping trapped employees who had been pinned under falling debris, while others dragged out the injured and the dead. Officials said the dead included 17 women and 8 men.


“I saw them take out three people covered in blood,” said Trinidad Díaz, 31, the owner of a restaurant a block from the explosion. “And after that, ambulances started arriving, one after the other.”


The blast — in a highly protected but decaying office complex — comes in the middle of a heated debate over the future of Pemex, a national institution and a corporate behemoth that has been plagued by declining production, theft and an abysmal safety record that includes a major pipeline explosion almost every year, like the one in September that killed 30 workers.


Experts, while cautioning that it was too early to tell what had gone wrong, said the company would inevitably face more severe scrutiny as Mexico’s Congress returned to work in the coming weeks. The country’s new president, Enrique Peña Nieto, has pledged to submit a plan for overhauling Pemex, opening it to more private investment and perhaps greater consolidation. But with the blast, deliberations about the company could become more elemental.


“You pull all of this together and you say, well, if they can’t even guarantee safety in their own building, their own headquarters, what does that tell us about the company?” said Duncan Wood, director of the Mexico Institute at the Woodrow Wilson International Center for Scholars. “It tells us there are things seriously wrong there. It tells you things need to be seriously shaken up.”


George Baker, director of Energia.com, an energy research institute in Houston, said that previous safety scandals at Pemex had been used by Mexican leaders as an argument for making controversial changes. In 1992, he said, a major explosion in a residential Guadalajara neighborhood — caused by gas leaking into the sewers — was followed by calls for change, and a plan to break Pemex into smaller pieces.


“The provocation, the pretext was that we had this terrible thing happen and now we are going to have a response from Pemex,” Mr. Baker said, adding that the explosion on Thursday would also now become part of the political calculations over what to do about the company.


“This may be used, may be manipulated, used as a pretext to do something,” he said. “Who knows what that something is, but they may exploit it to do something they were going to do anyway.”


At the scene, employees who were visibly shaken said the explosion felt like a bomb or an earthquake. After a deep rumble, a plume of smoke rose skyward and people rushed into the streets. Four rescue helicopters landed in the area to remove the dead or injured, while a half-dozen more helicopters hovered overhead. Soldiers, police officers and ambulances filled the area, and streets were quickly cordoned off.


A team of three emergency responders who had entered the building soon after the blast said that it appeared that two basement floors and parts of three upper floors had collapsed. Papers were strewed everywhere, and the scent of dust lingered in the air. Those on the emergency team said another rescue worker who had gone inside told them he saw eight lifeless bodies.


Just before dark, local news outlets reported that President Peña Nieto had arrived. He had already demanded an investigation and expressed remorse, using his Twitter account. “I profoundly lament the death of our fellow workers at Pemex,” he said on Twitter just before arriving. “My condolences to their families.”


Pemex officials, using the company’s official Twitter account to confirm that at least 14 people had died, said around the time of the explosion that its offices were being evacuated because of an electrical problem. Later, the company said forensic teams were investigating the cause, which had not been determined. “Any other explanation with respect to this is speculation.”


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Sony ignites talk of PS4 unveil with Playstation meeting






TOKYO (Reuters) – Sony Corp will this month host its first major Playstation meeting in two years, sparking a flare-up in online speculation the Japanese consumer electronics giant is preparing to unveil the successor to its 70 million-selling PS3 games console.


Sony declined to say whether it would release a new product at the meeting in New York on February 20. “We will be talking about the Playstation business,” spokesman Masaki Tsukakoshi said on Friday. A Google search for “Sony Feb 20 Playstation” returned more than 7 million hits.






The last time Sony held a Playstation event, in January 2011, it presented a protoype of its handheld Vita console. Before that, it convened a gathering in 2005 two months after it first demonstrated the PS3 concept. A meeting in 1999 revealed designs for the PS2.


It has been more than six years since Sony launched the PS3 home console, a longer gap than between it and its PS2 predecessor, adding to the anticipation that it will soon disclose its next gaming concept.


Since Sony’s last home console launch, the games market has been transformed by the boom in smartphones and tablet computers that have wooed players with free or cheap games.


Sony and other console makers Nintendo Co Ltd and Microsoft Corp now have to contend with competition from hand-held devices made by Apple Inc, Samsung Electronics and others.


Analysts expect that tablets and other mobile devices will match the power and graphics of today’s games consoles within a few years.


Struggling under competitive pressure, Nintendo on Wednesday cut its sales target for the Wii U, successor to its 100 million-selling Wii, to 4 million machines by the end of March from its launch in November, compared with an earlier forecast for 5.5 million.


(Reporting by Tim Kelly; Editing by Daniel Magnowski)


Gaming News Headlines – Yahoo! News





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American Idol Discovers Big Talent in Texas and California






American Idol










01/30/2013 at 11:00 PM EST







From left: Randy Jackson, Mariah Carey, Ryan Seacrest, Nicki Minaj and Keith Urban


Michael Becker/FOX.


It's the final week of American Idol's cross-country talent search. And as the judges head to San Antonio, Texas, a surprising lack of diva-on-diva trash-talking allowed the focus to fall squarely on the contestants who seemed like they could be serious contenders this season (or at least keep things interesting).

Case in point: 19-year-old Mississippi native Papa Peachez who described himself as "a cute little white boy and ... so much more than that. I'm really just a big black woman trapped in a trapped in a little boy's body."

After Peachez belted out an original song, Nicki Minaj immediately showed him some love. "I think that you are a superstar," she said. The other judges weren't as convinced, but Minaj managed to twist enough arms (not literally) to get the boy through to Hollywood.

Peachez is going to have some steep competition from another 19-year-old – San Antonio's Adam Sanders, who blew away the judges with his rendition of the Etta James classic "At Last."

"You shocked us all, Dawg," Randy Jackson told the singer before giving him a standing ovation along with Mariah Carey and Keith Urban.

Other notables from the Lone Star State included an Arkansas beauty queen, a vibrant mariachi singer and 16-year-old Senni M'mairura, whose rendition of the Jackson 5's "Who's Lovin You" drew raves and left Minaj sputtering about other things that apparently make her feel good: "Candy canes, strawberries, whip cream, rainbows and sunny skies," she said.

Next the judges hopped aboard the Queen Mary in Long Beach, Calif., to see what the West Coast had to offer. That's where Jesaiah Baer, 16, had to contend with an impromptu fire drill but still managed to blaze her way to Hollywood.

Then, after an emotional number from Iraq war veteran Matt Farmer, the episode ended with two powerful stories from young, would-be Idols who've overcome bullying.

Briana Oakley, 16, had to change schools after her classmates turned on her when she found success on a televised talent show. But she won the judges over with her performance Patty Griffin's "Up to the Mountain."

And 21-year-old Matheus Fernandes, who was quite a bit shorter than everyone else in the room, broke down in tears after getting praise from the judges for his version of "A Change Is Gonna Come."

"To me," Randy told him, "You're 10 feet tall."

Thursday American Idol heads to Oklahoma – and next week to Hollywood.

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Sex to burn calories? Authors expose obesity myths


Fact or fiction? Sex burns a lot of calories. Snacking or skipping breakfast is bad. School gym classes make a big difference in kids' weight.


All are myths or at least presumptions that may not be true, say researchers who reviewed the science behind some widely held obesity beliefs and found it lacking.


Their report in Thursday's New England Journal of Medicine says dogma and fallacies are detracting from real solutions to the nation's weight problems.


"The evidence is what matters," and many feel-good ideas repeated by well-meaning health experts just don't have it, said the lead author, David Allison, a biostatistician at the University of Alabama at Birmingham.


Independent researchers say the authors have some valid points. But many of the report's authors also have deep financial ties to food, beverage and weight-loss product makers — the disclosures take up half a page of fine print in the journal.


"It raises questions about what the purpose of this paper is" and whether it's aimed at promoting drugs, meal replacement products and bariatric surgery as solutions, said Marion Nestle, a New York University professor of nutrition and food studies.


"The big issues in weight loss are how you change the food environment in order for people to make healthy choices," such as limits on soda sizes and marketing junk food to children, she said. Some of the myths they cite are "straw men" issues, she said.


But some are pretty interesting.


Sex, for instance. Not that people do it to try to lose weight, but claims that it burns 100 to 300 calories are common, Allison said. Yet the only study that scientifically measured the energy output found that sex lasted six minutes on average — "disappointing, isn't it?" — and burned a mere 21 calories, about as much as walking, he said.


That's for a man. The study was done in 1984 and didn't measure the women's experience.


Among the other myths or assumptions the authors cite, based on their review of the most rigorous studies on each topic:


—Small changes in diet or exercise lead to large, long-term weight changes. Fact: The body adapts to changes, so small steps to cut calories don't have the same effect over time, studies suggest. At least one outside expert agrees with the authors that the "small changes" concept is based on an "oversimplified" 3,500-calorie rule, that adding or cutting that many calories alters weight by one pound.


—School gym classes have a big impact on kids' weight. Fact: Classes typically are not long, often or intense enough to make much difference.


—Losing a lot of weight quickly is worse than losing a little slowly over the long term. Fact: Although many dieters regain weight, those who lose a lot to start with often end up at a lower weight than people who drop more modest amounts.


—Snacking leads to weight gain. Fact: No high quality studies support that, the authors say.


—Regularly eating breakfast helps prevent obesity. Fact: Two studies found no effect on weight and one suggested that the effect depended on whether people were used to skipping breakfast or not.


—Setting overly ambitious goals leads to frustration and less weight loss. Fact: Some studies suggest people do better with high goals.


Some things may not have the strongest evidence for preventing obesity but are good for other reasons, such as breastfeeding and eating plenty of fruits and vegetables, the authors write. And exercise helps prevent a host of health problems regardless of whether it helps a person shed weight.


"I agree with most of the points" except the authors' conclusions that meal replacement products and diet drugs work for battling obesity, said Dr. David Ludwig, a prominent obesity research with Boston Children's Hospital who has no industry ties. Most weight-loss drugs sold over the last century had to be recalled because of serious side effects, so "there's much more evidence of failure than success," he said.


___


Online:


Obesity info: http://www.cdc.gov/obesity/data/trends.html


New England Journal: http://www.nejm.org


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Marilynn Marchione can be followed at http://twitter.com/MMarchioneAP


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