Vitamins: The Good, the Bad, and the Useless

Vitamins and minerals are essential to health, but that doesn't mean that megadoses will keep you out of the hospital or make you live longer. Some may be harmful. In most cases, it's preferable to get these nutrients from a balanced diet. Here's the lowdown on eight common supplements — most of which you probably don't need.

High doses of certain vitamins and minerals may be appropriate for certain people, though. Talk to your doctor about supplements if you are a woman of childbearing age, are a vegetarian or vegan, have limited exposure to the sun, are an athlete in training, or suspect for any reason you may be malnourished.

1. Beta-Carotene
Best food sources
Carrots, spinach, kale, cantaloupe

Why you may be taking it
As an antioxidant, especially to prevent cancer.

What you should know
Beta-carotene supplements increase the risk of lung cancer in smokers. There is no evidence that they prevent any other form of cancer.

Do you need it?
Don't take it *Recommended dietary allowances for healthy adults are listed; they may be lower or higher for children, women who are pregnant or nursing, the elderly, and other groups.

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2. Folic Acid
Best food sources
Fortified bread and breakfast cereal, legumes, asparagus

Why you may be taking it
To prevent birth defects.

What you should know
Supplements reduce the risk of neural tube defects in newborns. However, some doctors say supplementation of food with folic acid could be fueling rising rates of colon cancer.

Do you need it?
Only women who are pregnant or may become pregnant are advised to take it.

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3. Selenium
Best food sources
Brazil nuts, tuna, beef

Why you may be taking it
To prevent cancer, especially prostate cancer.

What you should know
One 2007 study found a 50% increased risk of type 2 diabetes in people who took 200 micrograms a day. A major study will determine whether selenium supplements prevent prostate cancer, but it won't be completed until 2013.

Do you need it?
Don't take it.

4. Vitamin B6
Best food sources
Baked potatoes, bananas, chickpeas

Why you may be taking it
To prevent mental decline and lower homocysteine levels.

What you should know
Two studies failed to show cognitive benefits. B6 does reduce homocysteine, but it's not clear whether this prevents heart attacks.

Do you need it?
Take it only if your doctor recommends it.

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5. Vitamin B12
Best food sources
Fish and shellfish, lean beef, fortified breakfast cereal

Why you may be taking it
To prevent age-related mental decline and boost energy.

What you should know
Vitamin B12 deficiency, which can cause anemia and dementia, is a problem for some seniors, so supplements can help. However, high doses of B12 have not been proven to prevent cognitive loss, nor do they boost energy.

Do you need it?
Take it only if your doctor recommends it.

6. Vitamin C
Best food sources
Citrus fruits, melons, tomatoes

Why you may be taking it
To prevent the common cold. Also as an antioxidant to help fight cancer or heart disease.

What you should know
A review of 30 clinical trials found no evidence that vitamin C prevents colds. Exceptions: It may reduce the risk in people who live in cold climates or experience extreme physical stress, such as running marathons. Smokers may need extra vitamin C. High doses of vitamin C do not seem to prevent cancer or heart disease.

Do you need it?
Most people don't need C supplements.


News from - http://shine.yahoo.com/channel/health/vitamins-the-good-the-bad-and-the-useless-2572050/

Profound change for Facebook set to 'lock in' users

Facebook on Friday begins rolling out its biggest ever shake-up, in a move observers say will not only profoundly alter how its 800 million users interact with the site, but will keep them coming back for decades to come.

The new "Timeline," revealed last week by chief executive Mark Zuckerberg will also likely shock some users, notorious for backlashes in recent years over even small adjustments to the site, let alone a complete re-think of how their lives are presented to the world.
The changes amount to the "heart of your Facebook experience, completely rethought from the ground up," Zuckerberg told an annual developers conference.

Rick Marini, CEO of the Facebook-focused "career network" BranchOut, which itself boasts millions of users, marveled this week in a conference call with marketers and reporters how the site had managed to build an enduring model.

"If your Timeline becomes an important part of your life -- the diary of your life -- Facebook may have just locked people in for the next 20 years," Marini said Wednesday.
If Facebook is "where all of this happens, all your pictures, all your video, everything you've ever done," he added: "you're never going to leave."

Zuckerberg said his team's main aim was "to design a place that feels like your home," prompting Forrester analyst Sean Corcoran to note that Facebook was "positioning itself as not just your social graph online, but your life online."

Pete Cashmore, founder of influential tech blog Mashable, this week anticipated the expected response from users in an article for CNN.com under the blunt headline, "You'll freak when you see the new Facebook."

The move, Cashmore said, would be likely jarring at first for millions of people who visit the site every day.

But when they see their lives laid out before them in a neat, single page, they will realize Facebook has "unleashed something so remarkable that you didn't even recognize it at first: A meaningful social network," he wrote.

Observers saw a clear challenge to ubiquitous search giant Google, as 27-year-old Zuckerberg explained that the site he launched from his Harvard dormitory room in 2004 sought to be a central hub for the Internet.

The overhauled "Timeline" profile pages, as users will see as it opens up to the world Friday, with access further expanded in coming weeks, shows that the social network behemoth has saved everything that's ever been uploaded.

Mapping people's lives -- through photos, videos, status updates, comments, and even "likes" of specific content -- the new Facebook catalogues it all, literally from the beginning: scrolling to the bottom, every user's Timeline kicks off with an entry for their birth.

"Timeline is the story of your life," the young CEO announced last week with a barely contained sense of glee.

Yet apart from a relatively small number of industry geeks who followed the Zuckerberg announcement last week, the vast majority of 800 million users have little idea of the extent of the changes afoot the next time they log on.

News from - http://news.yahoo.com/profound-change-facebook-set-lock-users-083140695.html

Could model airplanes become a terrorist weapon?

BOSTON (AP) — Model airplanes are suddenly on the public's radar as potential terrorist weapons.

A 26-year-old man from a Boston suburb was arrested Wednesday and accused of plotting to attack the Pentagon and the U.S. Capitol with remote-controlled model planes packed with explosives.

These are not balsa-wood-and-rubber-band toys investigators are talking about. The FBI said Rezwan Ferdaus hoped to use military-jet replicas, 5 to 7 1/2 feet long, guided by GPS devices and capable of speeds over 100 mph.

Federal officials have long been aware of the possibility someone might try to use such planes as weapons, but there are no restrictions on their purchase — Ferdaus is said to have bought his over the Internet.

Counterterrorism experts and model-aircraft hobbyists said it would be nearly impossible to inflict large-scale damage of the sort Ferdaus allegedly envisioned using model planes. The aircraft are too small, can't carry enough explosives and are too tricky to fly, they said.

"The idea of pushing a button and this thing diving into the Pentagon is kind of a joke, actually," said Greg Hahn, technical director of the Academy of Model Aeronautics.

Rick Nelson, a former Navy helicopter pilot who is now a senior fellow at the Center for Strategic and International Studies, said Ferdaus would have had to hit a window or other vulnerable area to maximize damage, and that would have taken precision flying.

"Flying a remote-controlled plane isn't as easy as it actually looks, and then to put an explosive on it and have that explosive detonate at the time and place that you want it add to the difficulty of actually doing it," he said.

Ferdaus, a Muslim American from Ashland, was arrested after federal agents posing as al-Qaida members delivered what he believed was 24 pounds of C-4 explosive, authorities said. He was charged with attempting to damage or destroy a federal building with explosives. A federal affidavit claims he began planning "jihad" against the U.S. in early 2010 after becoming convinced through jihadi websites and videos that America was evil.

Ferdaus had a physics degree from Northeastern University and enjoyed "taking stuff apart" and "learning on my own," according to court papers.

The model planes Ferdaus eyed were the F-4 Phantom and the F-86 Sabre, small-scale versions of military jets, investigators said. The F-4 is the more expensive of the two, at up to $20,000, Hahn said. The F-86, one of which Ferdaus actually obtained, costs $6,000 to $10,000 new.

Ferdaus' plan, as alleged in court papers, was to launch three such planes from a park near the Pentagon and Capitol and use GPS to direct them toward the buildings, where they would detonate on impact and blow the Capitol dome to "smithereens." He planned to pack five pounds of plastic explosives on each plane, according to prosecutors.

James Crippin, an explosives and anti-terrorism expert, said that much C-4 could do serious damage — a half-pound will obliterate a car. But he said getting a stable explosive like C-4 to blow up at the right time would have been hugely difficult.

And there were slim prospects of causing any serious damage to buildings like the Pentagon and Capitol, which are undoubtedly hardened to withstand explosions, according to Crippin, director of the Western Forensic Law Enforcement Training Center.

"Basically, I think he's suffering from delusions of grandeur," he said.

Hahn said the heavier of the two models Ferdaus was allegedly planning to use could carry a maximum of two pounds of plastic explosive before malfunctioning. That's not including the weight of any GPS system, he added.

"It's almost impossible for him to get this done," he said.

Remote-controlled aircraft have been considered by terrorists before. In 2008, Christopher Paul of Worthington, Ohio, a Columbus suburb, pleaded guilty to plotting terrorist attacks in the U.S. and Europe using explosive devices. Prosecutors said he researched remote-controlled boats and a remote-controlled 5-foot-long helicopter.

And after Sept. 11, federal agents asked the Academy of Model Aeronautics' 143,000 members to watch for any fellow enthusiasts who might be buying planes with bad intentions.

Well before the Massachusetts arrest, police in Montgomery County, Md., put out a terrorist warning to hobby shops to be aware of customers "who don't appear to be hobbyists" buying model airplanes with cash and asking how they can be modified to carry a device.

The Federal Aviation Administration is devising new rules for model airplanes and other unmanned aircraft, but the restrictions are aimed primarily at preventing collisions. Under current FAA rules, such planes are generally limited to flying below 400 feet and away from airports and air traffic.

Massachusetts prosecutor Gerry Leone, who handled the prosecution of would-be shoe bomber Richard Reid, said terrorists are always building bombs out of common, legitimate items, and imposing restrictions on buying model aircraft would not make sense simply because of this one case.

But he said law enforcement might want be more vigilant about such purchases.

Similarly, Rep. John Mica, R-Fla., chairman of the House Transportation and Infrastructure Committee, said recent advances in model airplane technology could make them more attractive to terrorists. But he said the answer is better intelligence, not trying to regulate hobbyists and their toys.

"Kids have them, people fly them, groups are organized just to engage in this type of pastime activity," the congressman said. "It would be almost impossible to regulate the little engines and things, propellers."

News from - http://news.yahoo.com/could-model-airplanes-become-terrorist-weapon-214956090.html

On-Spot: 'Bigg Boss Season 5' launch

The fifth season of TV reality show 'Bigg Boss' promises to get bigger and better with tons of drama and manipulation, having changed its house location to Karjat, besides having two star hosts --Salman Khan and Sanjay Dutt -- who will be welcoming 14 new inmates.

The names that are doing the rounds include - former world heavyweight boxing champion Mike Tyson, Colombian singer and dancer Shakira, former cricketer Navjot Singh Sidhu, Nihita Biswas (wife of convicted murderer Charles Sobhraj) Mexican actress Barbara Mori, former South African cricketer Jonty Rhodes, pop icon Lady Gaga, British singer- rapper Jay Sean, stand-up comedian Sudesh Lehri, Jaspal Bhatti, Shekhar Suman's actor son Adhyayan, TV actors Parul Chauhan (of 'Bidaai' fame), Karan Singh Grover (of 'Dil Mill Gayye') and Amar Upadhyay.

News from - http://entertainment.in.msn.com/specials/entertainment_photos.aspx?cp-documentid=5477819

TCS, Cognizant and Wipro record top revenues

Indian IT companies post an increase of 19 per cent in its total revenue during financial year 2010-11


Tata Consultancy Services, Cognizant and Wipro were the top IT companies with revenues of Rs.29,801 crore, Rs.25,477 crore and Rs.21,393 crore revenues, respectively while IT companies posted an increase of 19 per cent in its total revenue at Rs.4,38,296 crore ($96.1 billion) during financial year 2010-11, said a research report, according to IANS.

The annual research report of industry journal Dataquest, the flagship publication of CyberMedia has informed "the growth is a significant bounce-back for the industry which recorded just 8 percent growth in 2009-10, in the wake of the global recession in 2009 and 2010, which made both global and Indian companies cut back on their IT spending."

According to the report, exports accounted for 66.4 per cent of the industry while the domestic market accounted for the remaining 33.6 per cent. Also the domestic market has grown 23 per cent with the revenues of Rs.1,47,152 crore while the exports reported Rs.2,91,144 crore, growing at 17 per cent.

However, Hewlett Packard India stood as the largest IT player in the domestic market while Tata Consultancy Services as the largest exporter from India.

Also, when IT services exports grew at 21 per cent, engineering services exports grew 22 per cent and BPO exports grew 7 per cent. Consumer technology segments also witnessed an impressive growth.

However, in the competitive landscape where IT giants like TCS , Wipro and smaller players are in an intense competition with each other, technology major Infosys's growth has witnessed a slow ride in the recent quarters. Due to the economic slowdown in the US and Europe the company's clients might curb their budget plan on information technology this year, feared the company CEO S.D. Shibulal once. More than 80 per cent of the revenues in India's IT sector usually comes from the markets like U.S and Europe.

News from - http://news.in.msn.com/technology/article.aspx?cp-documentid=5431662