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Getting more sleep could quiet obesity genes

New study found that those who get more than nine hours sleep are less likely to put on weight.

Think it might be in your genes to be overweight? A new study suggests getting more sleep could help you overcome those genes and lose unwanted pounds.

The study says those who get lots of sleep -- meaning around nine hours a night -- are less likely to put on weight, even if they have the genes that predispose them to weight gain.

A number of studies have shown there s a connection between sleep and weight. Some studies have found that people who sleep less than five hours a night have an increased risk of developing Type 2 diabetes. Other studies have found that people who are night owls tend to eat more -- and eat worse.

But this study, published Tuesday in the journal Sleep, is one of the first to look at what role genetics plays. It was able to do that by studying twins, who share similar genetics but whose environment and lifestyles might be quite different.

The researchers from the University of Washington Medicine Sleep Center studied 1,088 pairs of twins: 604 were identical twins -- who share the same genes -- and 484 were fraternal twins, who share some but not all the same genes. All were part of the university s Twin Registry and the average age of the participants was 37.

As expected, the participants who reported they slept the least had an increased risk for having an elevated BMI (body mass index). Among the participants who were getting less than seven hours of sleep per night, their genes seemed to play more than twice as large a role in determining their BMI than those who were getting nine or more hours of sleep each night.

"The results suggest that shorter sleep provides a more permissive environment for the expression of obesity related genes," study leader Dr. Nathaniel Watson said in a statement.

"Or it may be that extended sleep is protective by suppressing expression of obesity genes."

It s not known exactly which genes affect our weight, but some research has suggested the genes that govern glucose metabolism play a role, as do genes affecting energy use, fatty acid storage and "satiety" -- meaning how hungry we feel after eating.

Previous research has also shown that sleep deprivation can play havoc with our hunger hormones, decreasing the levels of those hormones that make us feel full.

While it s unlikely that we can sleep our way to weight loss, getting more sleep might allow us to control our eating and to do more exercise -- two things that we know do lead to a healthy weight.

Cell phones pose no health risk

No evidence linking cell phone use to health risk, UK study revealed.

The UK s Health Protection Agency released a statement Thursday stating there is no compelling evidence that mobile phones are dangerous to human health.

The Agency s Advisory Group on Non-ionising Radiation (AGNIR) updated it s most recent statement from 2003 saying they have not changed their position on the matter in light of recent research.

Dr. John Cooper, director of the HPA s Centre for Radiation, Chemical and Environmental Hazards, added his support to the statement, noting, "There has been considerable new scientific evidence published since the last AGNIR report in 2003, and this report further consolidates the evidence base on which the HPA issues its advice."

"The HPA s position on mobile phone technologies is in line with the AGNIR s findings. There is still no convincing scientific evidence that RF field exposures from mobile phones and other radio technologies affect human health at exposure levels below internationally agreed guidelines."

Mexican woman pregnant with nine babies: report

The woman is currently being treated at a hospital in the state capital Saltillo.

A Mexican woman is pregnant with nine babies - six girls and three boys - the country s main broadcaster Televisa reported on Thursday night.

The woman was identified as Karla Vanessa Perez of the northeastern state of Coahuila, which borders Texas. She is currently being treated at a hospital in the state capital Saltillo, the broadcaster said in the report.

Perez, whose age was not given, had fertility treatment leading to the multiple pregnancy, it said.

State-owned news agency Notimex also reported the pregnancy, saying Perez was due to give birth on May 20.

"It s very early to think of names for the babies," Perez told Notimex. "First I hope that everything goes well."

The successful delivery of nonuplets would be one of the highest multiple births ever recorded.

In 2009, a woman in California gave birth to octuplets, sparking worldwide media attention. 

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