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'Rewiring nerves' reverses hand and arm paralysis

Nerves inside paralysed people's bodies have been "rewired" to give movement to their arms and hands, say Australian surgeons.

Patients can now feed themselves, put on make-up, turn a key, handle money and type at a computer.

Paul Robinson, 36 from Brisbane, said the innovative surgery had given him independence he had never imagined, according to BBC.

Completely normal function has not been restored, but doctors say the improvement is life-changing.

Injuries to the spinal cord stop messages getting from the brain to control the rest of the body. The impact is paralysis.

People are drinking collagen powder for its anti-aging benefits, but how safe is it?

“Collagen is a structural protein made up of amino acids that's found naturally in the connective tissue of our bodies, such as our skin, hair, muscles, bones and even blood vessels,” Keri Gans, registered dietitian nutritionist and author of The Small Change Diet, tells Yahoo Lifestyle. “It is essentially the ‘glue’ that holds our body together, enables us to move and find stability.”

Adds Joshua Zeichner, MD, director of cosmetic and clinical research in Mount Sinai Hospital’s department of dermatology, “Collagen is the main protein in our skin that provides structure and support.”

And it’s that structure and support that plays a role in keeping skin looking smooth, firm, and wrinkle-free.

Leg fat 'better than belly fat' for older women

Carrying more fat on legs compared with the stomach protects postmenopausal women from heart disease, a study says.

Women of a healthy weight with the highest risk of stroke or heart disease had the most belly fat and the least hip and thigh fat, the European Heart Journal research found, according to BBC.

The scientists said "apple-shaped" women should try to lose belly fat and become more "pear-shaped".

More research is needed to find out why the link exists, a heart charity said.

Smoking 'damages eyes as well as lungs'

Millions of people in the UK are putting their sight at risk by continuing to smoke, warn specialists.

Despite the clear connection, only one in five people recognise that smoking can lead to blindness, a poll for the Association of Optometrists (AOP) finds.

Smokers are twice as likely to lose their sight compared with non-smokers, says the RNIB, according to BBC.

Antioxidants may 'feed' some cancers

Taking vitamin E - an antioxidant supplement once thought to have protective effects against cancer - may fuel the spread of the disease in some cancer patients, a new study suggests.

The new research from New York University (NYU) found that vitamin E may block the self-destructive tendencies of certain lung cancers.

Antioxidants may actually protect these tumors from destroying themselves, instead helping them to spread, according  to Daily Mail.

They advise that lung cancer patients stay away from vitamin E, and that patients more broadly should not assume that antioxidants are always the right thing to take to combat cancer.