Invisible Diet

Researchers are working a high-tech way to trick people into desiring less fat without dangerous side effects.

In an effort to curb obesity, they would inject the body with manufactured nanoparticles designed to fool the brain.

"You could call it an invisible diet," said biologist Tim Gilbertson of Utah State University. "It's really simple. This technology will help people to feel satisfied with a small serving of food instead of a large helping."