Scientists discover salamander secrets to regrowing limbs and organs | Death is Obsolete

Thanks to startling new research on immune cells in salamanders, medical science may be able to help humans one day regrow their limbs and regenerate their organs.

The key? Salamanders’ immune systems hold the secret to regrowing limbs. It could also help them regenerate spinal cords, brain tissue and even parts of their hearts, researchers have discovered.

Scientists from the Australian Regenerative Medicine Institute (ARMI) at Monash University found that immune cells — known as macrophages — are removed in salamanders, the amphibians lose their capability to regrow a limb. Instead, their bodies formed scar tissue.

Head researcher Dr. James Godwin says this brings scientists closer to understanding the biological conditions needed to regenerate body parts in humans.

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Has Science Cured Gray Hair?

Gray hair -- one of the classic signs of aging that can lead to a midlife crisis for some -- may some day be a thing of the past, much to the chagrin of hair-dye manufacturers and Corvette salesmen.

A team of European researchers claims to have found not only the root cause of gray hair, but also a treatment for the condition. Additionally, their treatment may help people with vitiligo, a condition that causes the loss of pigment in patches of skin, they say.

It's been known for years that hair turns gray due to a natural buildup of hydrogen peroxide in hair follicles, which causes oxidative stress and graying. (Hydrogen peroxide solutions have been used for years as a cheap and easy way to "go blonde.") (8 Tips for Healthy Aging)

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Science Finds Fountain of Youth Brain Region That Slows Down Aging

Eternal or even elongated life is an idiotic thing to wish for. You don't want to get old, and then tack on 50 more years of wrinkles and Metamucil. But prolonged youth? Full body youth? More time being young and nubile and beautiful? Absolutely. And the key to that could lie right inside your brain.

Scientists have for the first time found a region of the brain—a signaling pathway in the hypothalamus—that can slow down or speed up the aging process in mice. Their lives and youthful vigor were extended by about 20 percent by a combination of blocking a protein complex with a distressingly long name (nuclear factor kappa-light-chain-enhancer of activated B cells, or "evil magic") and injecting the brain with a hormone ("good magic", or gonadotropin-releasing hormone [GnRH]) that is blocked by that protein.

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