Chicken Eggs as Drug Factories
Hungry bug seeks hot meal
Middle school science adventures
Tree Frogs
Frogs and Toads
Sleep Affects a Bird's Singing
Polar Bears in Trouble
A Meal Plan for Birds
Calculating crime
Math Naturals
Internet Generation
Chemistry and Materials
Fog Buster
Diamond Glow
Batteries built by Viruses
The science of disappearing
A Classroom of the Mind
Fingerprint Evidence
Dinosaurs and Fossils
Dinosaurs Grow Up
Teeny Skull Reveals Ancient Ancestor
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Arctic Algae Show Climate Change
Getting the dirt on carbon
Polar Ice Feels the Heat
The Oily Gulf
Whale Watch
Acid Snails
Finding the Past
Prehistoric Trips to the Dentist
Salt and Early Civilization
Oldest Writing in the New World
Electric Eel
Sting Ray
Food and Nutrition
Food for Life
Chew for Health
A Taste for Cheese
GSAT English Rules
Problems with Prepositions
Subject and Verb Agreement
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
GSAT Exam Preparation
GSAT Scholarship
GSAT Exams Jamaica Scholarships
GSAT Scholarship
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exam Preparation
GSAT Mathematics
Play for Science
Math is a real brain bender
Math and our number sense:
Human Body
What the appendix is good for
Heavy Sleep
Attacking Asthma
Praying Mantis
Expert report highlights the importance to parents of reading to children!
Children and Media
Choosing a Preschool: What to Consider
The Particle Zoo
Einstein's Skateboard
The Pressure of Scuba Diving
Pumping Up Poison Ivy
The algae invasion
Fungus Hunt
Space and Astronomy
Zooming In on the Wild Sun
A Family in Space
Saturn's Spongy Moon
Technology and Engineering
Algae Motors
Reach for the Sky
Are Propellers Fin-ished?
The Parts of Speech
Adjectives and Adverbs
Countable and Uncountable Nouns
Morphing a Wing to Save Fuel
Charged cars that would charge
Tinkering With the Basic Bike
Where rivers run uphill
Watering the Air
Weekend Weather Really Is Different
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™