Jennifer Mathew: Alexis Gomez Dumas has battled weight for entire life.

Alexis Gomez: I've tried diet center, weight watcher, south beach, Atkins.

Jennifer Mathew: At five put three her top weight was 259 pounds, so what got her from this to her 175 pound for in today. Not exercise that simply maintains her weight. The weight lose started when she got this electronic pacemaker that shocks away fat. It's already approved in Europe, but it is still under study in the U.S.

Gary Foster: Much like a cardiac pacemaker regulates the heart, it's thought that a gastric pit pacemaker can regulate the sensations of the stomach.

Jennifer Mathew: Electrode implanted on the stomach valves send Alex impulses. Alexis can fell them, but she says those impulses make her feel full faster. Once that you shows in average 23 pound weight loss with the device.

In Chicago Dr. Todd Kuiken is using a high-tech approach to solve a different problem Jesse Sullivan needed it.

Jesse Sullivan: Made then at 2001 I made contact to 7200 volts electricity run it one arm man. Across my chest and down the other one twice.

Jennifer Mathew: Both arms were badly burned.

Jesse Sullivan: At 54 years old I lost my arms.

Jennifer Mathew: Jesse is the first person in the world with a bionic arm. One he moves with his mind. After the amputation Dr. Todd Kuiken took four remaining nerves from Jesse's arm and move them to his chest muscles.

Dr. Todd Kuiken: Now when the person thinks close hand, that muscles contracts and when we use a signal from it tell the hand come to close. The brain doesn't know it's connected to the wrong muscle anymore.

Jennifer Mathew: Jesse is thought fire the nerves and activate these electrodes which communicate with the computer and buried in his arm, but here is the amazing part.

Dr. Todd Kuiken: When you touch Jesse in different places, on his chest it feels like you're touching his hands. So Jesse what it's feel when I touch you right there.

Jesse Sullivan: Touching the palm on my hand by this move by the thumb and the first two fingers.

Jennifer Mathew: The Bionic arm is changed Jesse's life.

Jesse Sullivan: This is made my day great. This has given me a glimpse into the future that, I say this is beginning.

Jennifer Mathew: And that glimpse has left all of his asking what's next. This is Jennifer Mathew reporting.