metabolism

Recon 2: The Google map of the human body

What if you could "street view" the human body, navigating its interactive components all the way down to a metabolic level? An international group of scientists is working on that right now with a map of the human metabolism, which they call Recon 2.

Metabolism plays a key role in many diseases, and while scientists have already managed to reconstruct several models of it, each "represents only a subset of our knowledge" with "only partially overlapping content," the team writes in the journal Nature Biology.

"It's like having the coordinates of all the cars in town, but no street map," Bernhard Palsson, a professor of bioengineering at the University of California San Diego Jacobs School of Engineering and one of the authors of the paper, said in a statement. "Without this tool, we don't know why people are moving the way they are."… Read more

Trying to lose weight? Breathe into this gadget

Did you indulge at the Super Bowl party last night? Maybe you're still trying to work off the excesses of the holidays. Well, here's a dieting tool that's quite breathtaking -- literally.

Created by four Ph.Ds, mostly from Arizona State University, Breezing is a portable device that measures your metabolism using a method called indirect calorimetry. It analyzes your rates of oxygen consumption and carbon dioxide production.

You breathe into the mouse-size gadget that contains a sensor cartridge. It gauges your resting energy expenditure (REE), the metabolic rate indicating how quickly you're burning calories at rest. If you're trying to slim down, the faster the better. … Read more

This smiley face tattoo is monitoring you

A Ph.D. student at the University of Toronto is using the same transfer paper currently affixing temporary tattoos to kids -- in conjunction with a common screen-printing technique -- to develop a medical sensor that keeps tabs on a person's exertion by monitoring the skin's pH levels.

Similar devices, which are called ion-selective electrodes (ISEs), are already common among athletic trainers and medical researchers to help spot fatigue, dehydration, or even metabolic diseases. But they tend to be bulky and don't stick well to sweaty skin.

The new sensor stays put and doesn't look so, … Read more

Cell phone use excites brain, but is that harmful?

A new study has found that prolonged use of a cell phone increases brain activity but failed to determine whether such use can lead to health problems.

The study, published today in the Journal of the American Medical Association, recruited 47 people in good health to document the effects of cell phone use on the brain. Conducted in 2009 by researchers at the National Institutes of Health in Maryland, the study was created to see whether the electromagnetic fields emitted by cell phones affect the brain's glucose metabolism, considered a marker for brain activity.

Cell phones were placed next … Read more

Lenovo readying MacBook Air competitor?

If you asked geeks which manufacturer would be the first to take a shot at the MacBook Air, Lenovo probably would not be at the top of the list. Yet a rumored update to the manufacturer's X series line of ultraportables could do just that.

Gizmodo is thanking Best Buy for spilling the beans on the ThinkPad X300, which will reportedly replace last year's ThinkPad X61s. The ThinkPad X300 is said to feature a 13.3-inch wide-screen LED-backlit display, full-size keyboard, and 64GB solid-state drive. (Sound familiar?) Even better, the laptop is expected to include an integrated optical … Read more