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ViestiLähetetty: 2007-07-20 06:31:18 
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juniorikarppi
juniorikarppi

Liittynyt: 2007-07-05 18:36:49
Viestit: 92
Joko tästä on keskusteltu?
En haun avulla löytänyt, ainakaan näin yhtäkkiä.
Eli aiheena silmänpohjan ikärappeutumataudin (makuladegeneraatio) ja GI:n välinen suhde...

"Certain kinds of carbohydrates may play a role in the development of age-related macular degeneration, an incurable degenerative eye disease that is a leading cause of blindness in older adults. A new study has found that eating carbohydrate-rich food with a high glycemic index — a measure of a food’s potential to raise blood glucose levels — is associated with the development of the disorder."

"The glycemic index is a measure of how fast carbohydrates are metabolized — the faster they are broken down into glucose, the higher the glycemic index. Simple carbohydrates, like those in cakes and cookies, cheese pizza, white bread or other foods sweetened with sugar or corn syrup, are quickly metabolized by the cells, while the complex carbohydrates in brown rice, barley and many other vegetables are broken down more slowly."

Association between dietary glycemic index and age-related macular degeneration in nondiabetic participants in the Age-Related Eye Disease Study

Background: Age-related macular degeneration (AMD) is the major cause of irreversible blindness. AMD appears to share several carbohydrate-related mechanisms and risk factors with diabetes-related diseases, including retinopathy and cardiovascular disease (CVD); however, to date, only one small study has addressed this issue.

Objective: The objective was to test the hypothesis that dietary glycemic index (dGI), which has been related to the risk of diabetes and CVD, is associated with the risk and severity of AMD in nondiabetic elderly populations.

Design: Dietary information was obtained from 4099 participants aged 55–80 y (56% women) in the Age-Related Eye Disease Study (AREDS). A total of 8125 eligible eyes at baseline were classified into 1 of 5 AMD groups according to the size and extent of drusen, the presence of geographic atrophy, and neovascular changes. We used a generalized estimating approach to evaluate the relations between dGI and risk and severity of AMD with eyes as the unit of analysis.

Results: Compared with eyes in the first quintile of dGI, eyes in the fourth and fifth quintiles had a significantly or suggestively higher risk of large drusen, geographic atrophy, and neovascularization. The multivariate-adjusted odds ratios (95% CIs) for the highest quintile were 1.42 (1.09, 1.84), 1.78 (0.81, 3.90), and 1.41 (0.95, 2.08), respectively, of which only the odds ratio for large drusen was significant. A significant positive relation between dGI and severity of AMD was also noted (P for trend < 0.001). There was a 49% increase in the risk of advanced AMD (geographic atrophy plus neovascularization) for persons with a dGI higher than the sex median (women: 77.9; men: 79.3). This result indicated that 20% of prevalent cases of AMD would have been eliminated if the AREDS participants consumed diets with a dGI below the median.

Conclusion: The association between dGI and AMD from the AREDS cross-sectional analysis at baseline suggests that a reduction in the dGI, a modifiable risk factor, may provide a means of diminishing the risk of AMD.

Key Words: Retina • nutrition • carbohydrate • diabetes • insulin • cardiovascular diseases • glycation • fat • inflammation • aging • stress • epidemiology • risk factor • insulin-like growth factor


Saa laittaa lukkoon, jos jo keskusteltu...:)
En ehdi linkkejä kaivaa... later, jos tarvetta.


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 Viestin otsikko:
ViestiLähetetty: 2007-07-20 06:52:08 
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PaikallisSapuskaErkki
PaikallisSapuskaErkki
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Liittynyt: 2004-05-20 06:07:25
Viestit: 47843
Ei ole, kiva kun laitoit 8)

Samasta puhuttiin NY Timesissa pari päivää sitten ja olin jo laittaa sen linkin, mutta sitten kyseisen uutisen tragikoominen tapa muka selittää GI'tä maallikoille veti hommasta innostuksen ja jalat alta.... (vähänkin Gi'tä tuntevat saattavat itekaäjanauraa kanssani väittelle että juustopistsassa on yksinkertaisia hiilihydraatteja mutta ohrassa kompeksisia, sniff)

Mutta tämähän ei ole itse tutkimuksen vika vaan sen NYT'n popularisoidun uutisoinnin (jossa ei saa sanoa, että vaikkapa tärkkelys on yhtä aikaa sekä kompleksinen että nopea hiilihydraatti). Linkki abstraktiin on tässä:
http://www.ajcn.org/cgi/content/abstract/86/1/180

Ja tässäkin kyse on satunnaistetusta laajasta ja ilmeisen huolellisesti suunnitellusta ynnä toteutetusta tutkimuksesta.

_________________
Erkki terveys- eko- ja eettisistä syistä. Tyyli täällä, kliks
Ei eläinkään pysy terveenä jatkuvasti vaihtelevalla sapuskalla.
We are 90% microbes and 10% human.
Why invent a cure when you can profit from thousands of remedies? (DrWho)


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ViestiLähetetty: 2007-07-20 08:07:08 
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juniorikarppi
juniorikarppi

Liittynyt: 2007-07-05 18:36:49
Viestit: 92
Entäs tämä, onko keskusteltu?

Toinen mielenkiintoinen linkki, joka pisti silmään oli tämmöinen:
http://www.cnn.com/2007/LIVING/personal ... index.html

Weight loss is all in your head

* How we process information can indicate dieting success
* You can train your brain to become accustomed to new ways
* Success in weight loss can lead to achievements in other areas
* Expert: Transformation involved some meditative element

In the battle against fat, the heroes achieve what most of us only long for -- lasting weight loss. They're so unusual, they've become the subjects of ongoing research by scientists trying to finger just what it is that makes them stand out from the rest of dieting humanity.

The project is called the National Weight Control Registry (NWCR) and was created in 1993 by researchers at Brown University and the University of Colorado in the face of the well-known and defeating statistic: Ninety-five percent of dieters gain their weight back.

Registrants -- some 4,500 -- must have dropped at least 30 pounds and kept them off for a year or more, though the average member has lost twice that much and maintained it for about five years.

One of Treitler's aha moments came after the study subjects took a 120-item multiple-choice questionnaire that assesses thinking styles, called the Herrmann Brain Dominance Instrument (HBDI).

imply put, the theory behind it goes like this: We all naturally tend to process information, solve problems and relate to others in a particular way, and such inclinations roughly correspond to four different quadrants of the brain -- two on the right, two on the left. These preferences are like mental defaults your brain automatically resorts to when evaluating the world unless otherwise prompted and most people employ some combination of quadrants.

• "A" quadrant (upper left): People who favor this area are analytical, mathematical, logical problem solvers. Drawn to statistics and the workings of machinery, they can overanalyze a situation so much they have trouble taking action.

• "B" quadrant (lower left): These people are controlled, methodical, disciplined sticklers for structure and routine. Punctual and neat, they always have a plan, timetable and calendar with appointments penciled in.

• "C" quadrant (lower right): Lower-right thinkers are emotional, spiritual and focused on people and human connection.

• "D" quadrant (upper right): "D" types are strongly visual and easily bored, attracted to new ideas, fun and risk taking.

Which quadrant makes a successful dieter?

"We found that those with the most dramatic losses scored noticeably higher in favoring 'B,' the lower left," says Treitler.

This makes sense to her, having observed many people struggling with weight. Someone inclined toward plans and routines, who sees life through methodical eyes, would be the most comfortable with the mundane details of calorie counting and portion control. She would also be more able to coolly observe herself and catalog obstacles and failings without succumbing to an emotion like self-hatred.

Kts. lisää:
http://www.cnn.com/2007/LIVING/personal ... index.html


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 Viestin otsikko:
ViestiLähetetty: 2007-07-20 08:27:39 
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PaikallisSapuskaErkki
PaikallisSapuskaErkki
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Liittynyt: 2004-05-20 06:07:25
Viestit: 47843
^^ Tuo jälkimmäinen kannattaisi varmaan siirtää omaksi ketjukseen, kun tässä puhutaan nyt ihan eri asiasta. Modet? (tämän viestin saa samalla poistaa)


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 Viestin otsikko:
ViestiLähetetty: 2007-07-20 08:33:04 
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juniorikarppi
juniorikarppi

Liittynyt: 2007-07-05 18:36:49
Viestit: 92
Juu, ehkä järkevä siirtää omaksi ketjukseen.
En uskaltanut pistää itse, kun ajattelin teidän jo siitä puhuneen...
Kun olette niin nopeita :) Tämänkin viestin voi poistaa, jos tarvis. :D


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 Viestin otsikko:
ViestiLähetetty: 2007-07-20 08:37:23 
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aktiivikarppi
aktiivikarppi

Liittynyt: 2006-10-07 10:28:00
Viestit: 1737
Atkinsin mainoskirjeessä oli samasta aiheesta artikkeli myös, olen vain tainnut delittää sen jo. Löytyykö joltakin?


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