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The Early Show talks to Dr. Jordan Metzl.

What has been your experience? Do you see kids in your own practice taking supplements like creatine and ephedra?

I have parents call me all the time asking about sports supplements. Some already have children taking them. Others are considering it and want my opinion. And in all cases I say the same thing: https://www.opblog.top/ - https://www.opblog.top/ Children should not take these supplements.

Are there any long-term dangers from taking creatine?

Little is known about the long-term effects of taking creatine because there have never been any safety studies done on children. However, it has been linked to muscle injury and kidney problems. Another interesting point: There was a study this year that found kids as young as 11 were taking it.

Now let’s talk about ephedra, another supplement popular with young athletes.

Ephedra is not as widely used as creatine, but it is potentially more dangerous. In fact a study in the New England Journal of Medicine has linked ephedra to 18 deaths in California alone over the past 2 years.

Ephedra is found in many over-the-counter products - http://edition.cnn.com/search/?text=over-the-counter%20products and works by stimulating the heart and central nervous system. Athletes use it to lose weight, increase metabolism, and burn fat.

But since ephedra is classified as a natural supplement it is not regulated by the Food and Drug Administration and therefore very hard to pull off store shelves.

Many children take these supplements behind their parents’ back. But you say there are some common warning signs they should look for:

Team Test

If one child on a team is taking a supplement, there is a high probability others are too. This is why I encourage parents to keep in close contact with the coaches and other parents. And while we've been focusing a lot of attention on boys this morning, this is also a big problem with girls.

Rapid Weight and Muscle Change

This is something we would see in a teen taking creatine or other more dangerous performance-enhancing substances such as anabolic steroids. A teen will, in a very short span of time, gain a considerable amount of weight and begin to get "cut."

Irritability and Hyperactivity

This is common among teens on ephedra. They are often moody and have a hard time keeping focused, because they are overstimulated. If your young athlete's grades start to fall suddenly, you may want to ask him or her if they are using ephedra.

Are there any supplements that are okay for teens to take?

No, because supplements have not been tested in children. So if you have a child playing a sport who is looking to bulk up, it's importnt you tell them that gradual is the way to go. Get them involved in a strength training program or have them talk to a nutritionist, who can suggest what foods can help them get bigger.©MMII CBS Worldwide Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed

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When Ben Affleck won best director at the Golden Globe Awards for "Argo," ex-fiancee Jennifer Lopez was among those cheering for him.

Lopez said she gave Affleck a standing ovation.

"[Argo] was a great movie," she said during an appearance on "The Ellen DeGeneres Show," airing Wednesday. "We got, you know, a lot of like ... They were really hard on us in the press when we dated back in the day. On movies and things like that. So it was a nice moment. It was nice to see him have that moment. I was really happy for him."

Lopez and Affleck broke off their engagement 10 years ago. The two, dubbed "Bennifer," were always in the tabloids and became a source of derision, and https://www.muraem1tz.online/ - https://www.muraem1tz.online/ their movie together, "Gigli," bombed, hurting their careers - http://www.broowaha.com/search/careers .

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Affleck, 40, is now married and has three children with actress Jennifer Garner. Lopez, 43, ended her marriage to singer Marc Anthony, with whom she has twins, in 2011.

Lopez told DeGeneres that it's not awkward seeing her exes, like Sean "Diddy" Combs and Affleck, at events like the Golden Globes.

"[It's not awkward], because I see them a lot," she said. "Because we're in the same business. We run in the same circles."

Stem cells are what the scientific buzz, and religious and ethical fuss, are all about. They are the basic cells from which all other cells in the body develop. The ReNeuron company in England is growing cells from the brains of human fetuses in incubators - https://www.google.com/search?hl=en&gl=us&tbm=nws&q=incubators . They have been manipulated so they will live and reproduce forever. The aim is to coax them into becoming specialized brain cells.

"We have developed 150 cell lines from the human fetal brain," says Dr. Martin Edwards, CEO of ReNeuron.

Edwards used to work in America. He returned to Britain to launch a stem cell research company with the aim of bringing treatments for brain disorders to market. He knows a number of American scientists are planning to come here as well.

"The uncertainty in the US, particularly in regard to academic researchers, about the availability of federal funding, is making people think hard about whether the US is the place to be."

Already, one prominent American researcher, Roger Pedersen of the University of California, is headed for Britain and other leading scientists are now worried about a brain drain.

"I think it's a shame," says Dr. Ben Barres, a neurobiologist at Stanford University Medical School. " I think it's a shame that our best stem cell scientists are going to feel that they need to move to another country to pursue their research program."

And Britain is ready to welcome them with open arms.

The prospects for the business of stem cell research seem greater in Britain right now because the British - https://www.google.com/search?hl=en&gl=us&tbm=nws&q=British have discussed all the issues, the debate here is less heated, and they've developed rules, overseen by the head of one of the Oxford University colleges, that most people seem comfortable with.

Ruth Deech and her government-appointed committee regulate all human embryo research in Britain, both public and private. She sees immense benefits from Britain's pragmatic approach.

"There will be spin-off companies, quite rightly so, which will bring these benefits not just to this country, but I hope all over the world," says Deech, chairman of the regulatory authority.

Britain led the way more than 20 years ago with the first test tube baby, https://www.pcwinbahc2.online - https://www.pcwinbahc2.online Louise Brown. It may well lead the way again if American scientists emigrate to the more supportive climate in the Britain.©MMII CBS Worldwide Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed

Tate Stevens, Season 2 winner of "The X Factor," has signed a record deal with Syco Music/RCA Records Nashville, Simone Cowell's label. The 37-year-old country singer is currently writing and recording songs for his major-label debut, due out this spring.

Stevens tweeted the news Tuesday:

This is really a dream come true, signed with Syco music, RCA Nashville. I am blessed because of you! #tatenation

The Missouri native did well on Cowell's show on Fox, never finding himself below second place during the voting period. Placed in the over-25 category, Stevens was mentored by producer L.A. Reid.

Stevens released an independent - http://www.trainingzone.co.uk/search/independent album in 2008.

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"The X Factor," meanwhile, will likely undergo some changes next season. Mentor https://www.wbpniks0r.online - https://www.wbpniks0r.online Britney Spears recently announced that she's leaving the show. There's no word on the line-up for Season 3.

Last year, more than 40,000 injuries were reported from the use of nonmotorized push scooters for the whole year. This year so far, there have been more than 68,000 injuries. That's almost 30,000 more than last year, and the summer's not even over yet. The number of deaths also increased to 13 nationwide, https://www.phfl005ls.online - https://www.phfl005ls.online compared to five last year.

Statistics show that most of the injuries happen to kids under the age of 15 and that the younger the child, the more severe the injury.

What kind of injuries are the most common?

By far the most common injuries are broken bones and joint dislocations in the upper extremities, but there are also a lot of lacerations, contusions, abrasions, strains, and sprains.

How can kids avoid these injuries?

Protective gear is the most important way of preventing injury, and an estimated 60% of injuries could be avoided by using equipment like a helmet and elbow and kneepads. But you should not ride at night, and you should avoid traffic because some of the most severe injuries involve result from collision with cars. Avoid gravel or uneven pavement that can make the scooter unstable, and wear sturdy shoes for better protection and control.

One of the inherent problems with scooters is their fundamental design. It’s easy to put your weight forward, which can make it harder to control if you take a turn too sharply. And although many injuries to the wrist occur when people fall over, wrist guards are not recommended because they make it more difficult to grip the handlebars. Gloves may offer better grip and protection to the hands.

How old should a child be before riding a scooter?

The Consumer Product Safety Commission says that children under 8 years old should only be riding scooters under close adult supervision. Children under 12 shouldn’t ride motorized scooters, which can reach much higher speeds and require brake and accelerator coordination.

Are motorized scooters legal?

It varies from place to place and you should check with your local authorities to find out what the regulations are in your neighborhood. But many places do not allow them in the street or public areas.

How can parents tell if their children are ready to ride a scooter?

One good indicator is how well they ride a bike. Since the skills are similar, if your child is confident on a bike, they probably have the skills for a scooter, too. If they are a little shaky, they probably aren’t ready yet.

To summarize, The US Consumer Product Safety Commission (CPSC) recommends the following safety guidelines:

For more safety tips, visit the U.S. Consumer Product - http://pixabay.com/en/new-zealand-waterfall-nature-Consumer%20Product/ Safety Commission official Web site.©MMII CBS Worldwide Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed