Keeping Bugs Away from Food
Growing Healthier Tomato Plants
Hungry bug seeks hot meal
Tree Frogs
Frogs and Toads
Poison Dart Frogs
Chicken Talk
Monkey Math
Glimpses of a Legendary Woodpecker
Listening to Birdsong
Swine flu goes global
Memory by Hypnosis
Carnivorous Birds
Chemistry and Materials
Picture the Smell
Popping to Perfection
Salt secrets
Lighting goes digital
Programming with Alice
Seen on the Science Fair Scene
Dinosaurs and Fossils
Mammals in the Shadow of Dinosaurs
Mini T. rex
Feathered Fossils
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Rodent Rubbish as an Ice-Age Thermometer
Coral Gardens
Digging into a Tsunami Disaster
To Catch a Dragonfly
Shrimpy Invaders
A Stormy History
Finding the Past
Sahara Cemetery
Of Lice and Old Clothes
Early Maya Writing
White Tip Sharks
Food and Nutrition
A Pepper Part that Burns Fat
Strong Bones for Life
Building a Food Pyramid
GSAT English Rules
Who vs. That vs. Which
Subject and Verb Agreement
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
Ministry of Education Announces 82 GSAT Scholarships for 2010
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Exams Jamaica Scholarships
Access denied - Disabled boy aces GSAT
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
How a Venus Flytrap Snaps Shut
Secrets of an Ancient Computer
Human Body
Hey batter, wake up!
A New Touch
Don't Eat That Sandwich!
Giant Squid
Sea Urchin
Sea Lions
How children learn
Raise a Lifelong Reader by Reading Aloud
Children and Media
The Mirror Universe of Antimatter
Hold on to your stars, ladies and gentlemen
Einstein's Skateboard
When Fungi and Algae Marry
Cactus Goo for Clean Water
Assembling the Tree of Life
Box Turtles
Komodo Dragons
Space and Astronomy
Saturn's Spongy Moon
Older Stars, New Age for the Universe
The two faces of Mars
Technology and Engineering
Algae Motors
Dancing with Robots
Beyond Bar Codes
The Parts of Speech
What is a Preposition?
What is a Verb?
Countable and Uncountable Nouns
Are Propellers Fin-ished?
Where rivers run uphill
Robots on the Road, Again
Where rivers run uphill
Weekend Weather Really Is Different
Catching Some Rays
Add your Article

Heavy Sleep

Weighing too much can damage your health, and obesity is a growing problem for both kids and adults around the world. Sleep might be one answer to the problem. A new study has found that elementary school students who slept too little were more likely to gain pounds. Past studies have shown a link between sleeping less and weighing more, but scientists have had a tough time determining "which came first, the chicken or the egg," says Julie C. Lumeng of the University of Michigan in Ann Arbor. In other words, it hasn't been clear whether kids who weigh too much have trouble sleeping, or whether sleeping less leads to weight gain. Both scenarios seemed equally possible. To get a better idea of which causes which, Lumeng and colleagues interviewed the parents of 785 third graders from around the United States. The parents answered questions about how well their kids slept that year. Three years later, the parents answered the same questions. By sixth grade, 18 percent of kids involved in the study were obese. The scientists found no relationship between weight and the students' race or gender. It also didn't matter how strict their parents were, or whether they were boys or girls. Obesity struck all of these groups equally. Instead, sleep seemed to be the key factor. Over the 3 years of the study, the children averaged a healthy 9.5 hours of sleep a night. Some kids, however, slept a lot more--or less--than others. For the sixth graders, every hour of sleep above the 9.5-hour average was linked to a 20 percent lower risk of being obese. Sleep appeared doubly important for the third graders. Every extra hour of sleep they got was linked to a 40 percent drop in obesity by sixth grade. "I expected we'd find that this [sleep link with obesity] was just a bunch of bunk," says Lumeng, a pediatrician. But their findings were convincing. No matter how her team looked at the link, "we couldn't make it go away."—Emily Sohn

Heavy Sleep
Heavy Sleep

Designed and Powered by™