Feeds

Drinking too much coffee can MAKE YOU BLIND

Study not iron-clad, but ask yourself, 'Do you feel lucky?'

  • alert
  • submit to reddit

Beginner's guide to SSL certificates

According to a new study, drinking more than three cups of coffee per day has been shown to correlate with an increased risk of developing glaucoma, which can lead to vision loss or blindness.

"While caffeinated coffee has several health benefits," lead researcher Jae Hee Kang told Health magazine, "drinking three or more cups of caffeinated coffee was found to be associated with increased risk of developing exfoliation glaucoma, particularly among those with a family history of glaucoma."

While coffee has for some time been known to be problematic for glaucoma sufferers due to the fact that it can increase pressure within the eyeball, Kang asserts that the hot brown drug can be linked to a specific type of the vision-destroying malady: exfoliation glaucoma. This syndrome occurs when material is rubbed off both the eye's iris and lens, which then clogs up the eyeball's fluid-draining system, leading to heightened inter-ocular pressure (IOP), which increases the risk of glaucoma.

Kang and her team's study, published in Investigative Ophthalmology & Visual Science, surveyed data from two studies, one with 78,977 women and another with 41,202 men. Its findings are not conclusive in a cause-and-effect sense, however – correlation is not causation, as we all know from our college classes – and the statistical significance of her findings is weak.

That said, her team did discover that those subjects who drank three or more cups of caffeinated coffee per day did have a higher incidence of exfoliation glaucoma than those who either abstained or were more moderate in their intake of a cup of joe – or three.

Despite the less than iron-clad results, the study concludes that "We observed a positive association between heavier coffee consumption with risk of [exfoliation glaucoma or exfoliation glaucoma suspect] in this large prospective study."

One medical professional is unconvinced. Referring to the studies from which Kang and her coauthors obtained the data, ophthalmology professor Alfred Sommer of Johns Hopkins University told Health, "These two studies have yielded literally thousands of articles, almost all of little value."

According to Sommer, the studies are missing the information researchers need to take into account the many variables that might influence conclusions to be drawn from them.

"To make matters worse," he added, "the conclusions in [Kang's] study don't even reach statistical significance."

Sommer's argument is a strong one – if you're looking for certainty. If, however, you've got a family history of glaucoma and you're not particularly lucky in life, you might think of making that third latte a decaf. ®

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
Renewable energy 'simply WON'T WORK': Top Google engineers
Windmills, solar, tidal - all a 'false hope', say Stanford PhDs
FORGET the CLIMATE: FATTIES are a MUCH BIGGER problem - study
Fat guy? Drink or smoke? You're worse than a TERRORIST
SEX BEAST SEALS may be egging each other on to ATTACK PENGUINS
Boffin: 'I think the behaviour is increasing in frequency'
HUMAN DNA 'will be FOUND ON MOON' – rockin' boffin Brian Cox
Crowdfund plan to stimulate Blighty's space programme
Post-pub nosh neckfiller: The MIGHTY Scotch egg
Off to the boozer? This delicacy might help mitigate the effects
I'M SO SORRY, sobs Rosetta Brit boffin in 'sexist' sexy shirt storm
'He is just being himself' says proud mum of larger-than-life physicist
NASA launches new climate model at SC14
75 days of supercomputing later ...
Britain's HUMAN DNA-strewing Moon mission rakes in £200k
3 days, and Kickstarter moves lander 37% nearer takeoff
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Choosing a cloud hosting partner with confidence
Download Choosing a Cloud Hosting Provider with Confidence to learn more about cloud computing - the new opportunities and new security challenges.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.