Space travel under threat as scientists find cosmic radiation could cause Alzheimer"s in astronauts

Space travel under threat as scientists find cosmic radiation could cause Alzheimer's in astronauts Once astronauts leave orbit they are exposed to constant shower of various radioactive particlesTests in mice showed those exposed to cosmic radiation displayed cognitive problems earlier in life | UPDATED: 09:44 GMT, 1 January 2013 The race for space tourism may be hotting up, but the practicalities of intergalactic travel have hit a new obstacle.

Taking aspirin for 10 years could double the risk of eye disorder that causes blindness

Taking aspirin for 10 years could double the risk of sight loss Scientists say taking aspirin for a decade could increase the chance of developing wet AMDThe condition causes swelling and bleeding underneath the macular, at the back of the eyeThis can cause permanent vision loss | UPDATED: 23:16 GMT, 18 December 2012 Taking aspirin for 10 years could more than double the risk of sight loss, according to a new study.

Dentists warned over cheap X-ray machine amid fears it could deliver 10 times too much radiation

Dentists warned over cheap X-ray machine amid fears it could deliver 10 times too much radiation Devices manufactured in China don't contain enough lead to protect patients and dentistsOne UK-based dental practice purchased one of the dangerous machines, and 'several' others have expressed interest in buying one | UPDATED: 17:19 GMT, 3 December 2012 Dentists have been warned not to buy a hand held X-ray machine which exposes patients to 10 times the recommended dose of radiation.

The breathtaking new images of the violence of a solar flare – and the aurora it created on earth

The breathtaking new images that reveal the violence of a solar flare – and the beautiful aurora it created on earth Radiation from the eruption set to hit earth within hours, creating a “moderate geomagnetic storm” Incredible phenomenon could give new insight into how solar eruptions affect electricity supplied on earth . Nasa today released stunning video showing a 500,000 mile long “solar whip” on the surface of the sun – and the beautiful aurora it created on earth.

Mammograms may boost breast cancer risk in women with faulty gene

Mammograms may boost breast cancer risk in women with faulty gene Radiation from mammograms may be harmful to women with mutation that makes them vulnerable to breast cancer'We believe countries who use mammograms in women under 30 should reconsider their guidelines', say experts | UPDATED: 16:01 GMT, 7 September 2012 Mammograms aimed at finding breast cancer might actually raise the chances of developing it in some young women, a study suggests.

"Chemo brain" DOES exist, finds study of breast cancer patients

'Chemo brain' DOES exist, finds study of breast cancer patients Chemo brain refers to mental fogginess experienced by many cancer patients during and after chemotherapyReview found patients performed worse on verbal and visual tests if they had the drug treatment | UPDATED: 15:22 GMT, 5 September 2012 Cancer patients have long joked and complained about the mental fogginess that can descend during and after treatment.

Here comes the sun: Astonishing “solar whip” half a million miles long spotted on the solar surface

Here comes the sun: Astonishing “whip” half a million miles long spotted on solar surface (and scientists say radiation from it is heading for earth) Radiation from the eruption set to hit earth within hours, creating a “moderate geomagnetic storm” Incredible phenomenon could give new insight into how solar eruptions affect electricity supplied on earth

Suntan lotion made from STRAWBERRIES could protect you from damaging UV rays

Suntan lotion made from STRAWBERRIES could protect you from damaging UV rays Compounds called anthocyanins, which give strawberries their red colour, have sun protection properties | UPDATED: 16:38 GMT, 6 August 2012 Fruity: Skin tests in labs showed strawberry extract protected it from the harmful effects of UVA light Sun-tan lotions made from strawberries could soon be on sale after the fruit was discovered to protect against sunburn.

Gene that spreads breast cancer discovered paving the way for new treatments

Gene that spreads breast cancer discovered paving the way for new treatments Chemotherapy often stops working because it doesn't kill cancer stem cells that fuel spread of tumours | UPDATED: 16:04 GMT, 25 July 2012 Scientists have discovered a gene that encourages the spread of breast cancer.