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Health & longevity news archive: January-February 2007

bionic eye implant
Trials for 'bionic' eye implants
(Feb 17, 2007)

A bionic eye implant that could help restore the sight of millions of blind people could be available to patients within two years. US researchers have been given the go-ahead to implant the prototype device in 50 to 75 patients. The Argus II system uses a spectacle-mounted camera to feed visual information to electrodes in the eye.

Read more. Source: BBC

man sleeping
No sleep means no new brain cells
(Feb 10, 2007)

Missing out on sleep may cause the brain to stop producing new cells, a study has suggested. The work on rats, by a team from Princeton University found a lack of sleep affected the hippocampus, a brain region involved in forming memories. The research in Proceedings of the National Academy of Science showed a stress hormone causes the effect.

Read more. Source: BBC

Why exercise gets harder with age
(Feb 10, 2007)

There is a reason why people feel they have to exercise harder as they age to get the same results, scientists say. A US team found a system that boosts muscles fails with age, leading to the need for increased efforts, the paper in Cell Metabolism reported. The finding could also help foster an understanding of type 2 diabetes, which is linked to ageing, the study said.

Read more. Source: BBC

brain scan
'Altruistic' brain region found
(Jan 23, 2007)

Scientists say they have found the part of the brain that predicts whether a person will be selfish or an altruist. Altruism – the tendency to help others without obvious benefit to oneself – appears to be linked to an area called the posterior superior temporal sulcus. Using brain scans, the US investigators found this region related to a person's real-life unselfish behaviour.

Read more. Source: BBC

ageing face
Hormone 'no anti-ageing elixir'
(Jan 17, 2007)

There is no proof that growth hormone therapy makes people live longer, say US scientists. The therapy has been touted in some quarters as a way to prevent – or even reverse – ageing. However, a Stanford University team found no evidence that it had any more effect than a regular mild workout.

Read more. Source: BBC

black tea
Milk in tea 'blocks health gains'
(Jan 9, 2007)

Adding milk to a cup of tea can destroy its ability to protect against heart disease, according to research. A small German study found drinking black tea significantly improved the ability of arteries to relax and expand to keep blood pressure healthy. But the European Heart Journal paper also found proteins in milk, called caseins, blocked this effect.

Read more. Source: BBC

brain scan
Scan shows how brains plot future
(Jan 2, 2007)

Brain scans have given US scientists a clue about how we create a mental image of our own future. The Washington University team say that specific areas of the brain are active when thinking about upcoming events. The Proceedings of the National Academy of Sciences study could help doctors trying to understand damage inflicted by strokes, injuries or diseases.

Read more. Source: BBC


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