Medical Forum / Diseases and Disorders / Lupus / May 2008
Potato Dialysis
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ironjustice@aol.com - 30 May 2008 17:21 GMT Could / would this relate to why a person with crohns can eat potato .. prepared ONLY in 'certain ways' .. ?
Certain Potato Preparation Guidelines For Kidney Dialysis Article Date: 30 May 2008 - 4:00 PDT Article
Potatoes are a valuable source of mineral nutrients that provide high levels of potassium. Individuals with compromised kidney function, however, must minimize their potassium intake. A new study in the Journal of Food Science explored the effects of leaching and boiling on levels of potassium and other minerals in potatoes and found that boiling cubed or shredded samples reduced potassium levels by 50 percent and 75 percent, respectively.
Shelley Jansky, PhD, and Paul Bethke, PhD, both of the United States Department of Agriculture - Agricultural Research Service and University of Wisconsin-Madison Department of Horticulture, utilized samples of potatoes that had been shredded as well as potatoes that had been diced into 1 cm cubes. The samples were then leached or boiled, two treatments that are most likely to have an impact on the mineral content of a consumed product.
The mineral content of the potatoes was drastically reduced by either cubing or shredding them and then boiling. Boiling shredded potatoes reduced levels of zinc, manganese, magnesium, and sulfur by 50 percent. Boiled potato cubes lost 35 percent of their total magnesium and zinc.
Leaching, which refers to soaking food in water before cooking, had little effect on the mineral levels of the samples. Because leaching alone was an ineffective method for reducing potassium content, there exists little benefit for renal failure patients trying to reduce potassium consumption by leaching potatoes.
Those with compromised kidney function can decrease their mineral intake while still taking advantage of the other nutritional qualities of potatoes by boiling them, thinly sliced. This method will remove a large quantity of many minerals, including potassium. It is not necessary to complicate the process by leaching potato slices before boiling them.
"Our study offers information about the nutritional quality of potatoes and the effects of cooking on the contents of mineral nutrients," the authors conclude. "It will likely result in changes in recommendations by medical staff working with patients who have compromised kidney function." To view this article in its entirety visit Editor's Note: According to the National Kidney Foundation, approximately 26 million Americans have Chronic Kidney Disease (CKD). More information is available here.
About IFT
Founded in 1939, and with world headquarters in Chicago, Illinois, USA, the Institute of Food Technologist is a not-for-profit international scientific society with 22,000 members working in food science, technology and related professions in the industry, academia and government. As the society for food science and technology, IFT brings sound science to the public discussion of food issues.
Institute of Food Technologists
Who loves ya. Tom
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ironjustice@aol.com - 30 May 2008 17:23 GMT On May 30, 9:21 am, "ironjust...@aol.com" <ironjust...@aol.com> wrote:crohns can eat
> potato .. prepared ONLY in 'certain ways' .. << This should have read lupus .. why can lupus patients eat potato prepared one way but not the other .. ?
Who loves ya. Tom
Jesus Was A Vegetarian! http://jesuswasavegetarian.7h.com
Man Is A Herbivore! http://tinyurl.com/a3cc3
DEAD PEOPLE WALKING http://tinyurl.com/zk9fk
> Could / would this relate to why a person with crohns can eat > potato .. prepared ONLY in 'certain ways' .. ? [quoted text clipped - 69 lines] > DEAD PEOPLE WALKING > http://tinyurl.com/zk9fk Andy - 30 May 2008 21:17 GMT In message <20a90888-1dcc-4030-ba7d-45fd78df40de@26g2000hsk.googlegroups.com>,
>On May 30, 9:21 am, "ironjust...@aol.com" <ironjust...@aol.com> >wrote:crohns can eat >> potato .. prepared ONLY in 'certain ways' .. << > >This should have read lupus .. why can lupus patients eat potato >prepared one way but not the other .. ? You have also scatter-gunned your wisdom on the potato to sci.med.nutrition, sci.med, misc.health.alternative, alt.support.crohns-colitis, and alt.support.kidney-disease.
To all of these, you followed it up with this correction:
============================================= On May 30, 6:11 am, ironjustice <teamtan...@hotmail.com> wrote:why a person with crohns can eat potato .. prepared ONLY in 'certain ways' .. ? <<
This should have been .. lupus ..
Sorry about that .. Lupus patients can eat potato one way but not the other .. boiled versus baked .. ?
Cold .. ?
I can't remember .. some girl with lupus mentioned it and I said .. noway ..
But .. she had lupus .. who am I to argue .. =======================================
So, your evidence seems to be that "some girl with lupus" can eat potato prepared in one way but not in another, although you cannot remember any details.
This you then generalise into all lupus patients having this problem.
Permit me to introduce some facts.
1. I know one lupus patient who does not have this problem.
2. I know many lupus patients who have never mentioned this problem; they are not reticent in stating what their problems are.
3. I have on several (about 12) occasions been with over 150 lupus patients; when food and diet were under discussion the potato was not mentioned.
4. "Just because you have lupus, it doesn't mean you can't also have something else". It is quite likely that your informant had some other disorder; it is quite unlikely that lupus and potato-preparation are causally linked.
 Signature Andy Taylor [Chair, N E Lupus Group]. <URL:http://www.northeastlupus.org.uk>
ironjustice@aol.com - 30 May 2008 23:34 GMT On May 30, 1:17 pm, Andy <a...@kitzbuhel.demon.co.uk> wrote:So, your evidence seems to be that "some girl with lupus" <<
You got some reason to be on this thread OTHER than to attempt to badmouth me .. ?
Do ya .. you useless fk .. ?
Do ya .. ?
Hit the fkg road and stay the fk away from me you useless .. fk.
Who loves ya. Tom
Jesus Was A Vegetarian! http://jesuswasavegetarian.7h.com
Man Is A Herbivore! http://tinyurl.com/a3cc3
DEAD PEOPLE WALKING http://tinyurl.com/zk9fk
> In message > <20a90888-1dcc-4030-ba7d-45fd78df4...@26g2000hsk.googlegroups.com>, [quoted text clipped - 58 lines] > Andy Taylor [Chair, N E Lupus Group]. > <URL:http://www.northeastlupus.org.uk> Andy - 31 May 2008 10:42 GMT In message <e7a299f0-8ee8-40ec-97bc-0aa3faa7c660@m45g2000hsb.googlegroups.com>,
>On May 30, 1:17 pm, Andy <a...@kitzbuhel.demon.co.uk> wrote:So, your >evidence seems to be that "some girl with lupus" << > >You got some reason to be on this thread OTHER than to attempt to >badmouth me .. ? I make no comment on what you choose to post to other groups.
In this group, I will continue to challenge unproven assertions.
If you don't like the heat, find another kitchen.
 Signature Andy Taylor [Chair, N E Lupus Group]. <URL:http://www.northeastlupus.org.uk>
J - 31 May 2008 10:17 GMT > In message > <20a90888-1dcc-4030-ba7d-45fd78df40de@26g2000hsk.googlegroups.com>, [quoted text clipped - 4 lines] > >This should have read lupus .. why can lupus patients eat potato > >prepared one way but not the other .. ? <snipped> potato - nightshade family http://en.wikipedia.org/wiki/Potato
I'm sure nightshade's been mentioned before (on group) if not on the FAQ or www.lupus.org. But my searching days are over due to limb and hand problems. J
Andy - 31 May 2008 10:48 GMT In message <48411795.DBF3D128@execulink.com>, J <nospam@pigment.inv> wrote [
>potato - nightshade family >http://en.wikipedia.org/wiki/Potato [quoted text clipped - 3 lines] >But my searching days are over due to limb and hand problems. >J http://www.northeastlupus.org.uk/katfaq/triggers.htm
About 2/3 down the page:
Excessive amounts of Solanins appear to be problematic for some patients. This is the Nightshade family and includes tomatoes, peppers, tobacco, tomatillos, potatoes and many other plants.
I don't know the source; there's no more detail.
 Signature Andy Taylor [Chair, N E Lupus Group]. <URL:http://www.northeastlupus.org.uk>
J - 31 May 2008 11:59 GMT > [ > >potato - nightshade family [quoted text clipped - 14 lines] > > I don't know the source; there's no more detail. This one says "no evidence" (but it's old) and look for patterrns (keep track) < http://www.lupus.org/webmodules/webarticlesnet/templates/new_communityexperts.as px?articleid=604&zoneid=96
"Q: Will eating nightshade vegetables increase my lupus flares or joint pain? It seems that every place I read about this has a different opinion about this.
A: The nightshade vegetables include white potatoes, tomatoes, peppers (sweet and hot), and eggplant. There are others, but they are not foods that are typically consumed in the U.S. While there is anecdotal evidence that some of these foods can be related to inflammation, there is no solid scientific evidence to support this concept. My advice would be for people to keep track of when they eat these foods, and to look for a pattern between consumption and a flare. They would want to observe a link between a particular food and a flare on multiple occasions -- not just a few times. If there does seem to be a connection, then by all means, a person could avoid one/all of the nightshade vegetables without creating any nutrient deficiencies. Peppers, for example, are high in vitamin C, but so are plenty of other foods (i.e. citrus), so limiting peppers in your diet isn't going to cause any problems. Bottom line -- there isn't any good scientific evidence linking nightshade vegetables to inflammation/flares, but if people believe there is an association for them, then it isn't going to hurt them to omit the offending food from their diet."
So his post was about "Individuals with compromised kidney function must minimize their potassium intake. Those with compromised kidney function can decrease their mineral intake while still taking advantage of the other nutritional qualities of potatoes by boiling them, thinly sliced. This method will remove a large quantity of many minerals, including potassium."
I think Lupus patients with compromised kidney function, should get their nutritional advice from a nutritionist at the nephrologist's ? They should know the latest and what's best for each patient. J
Andy - 31 May 2008 13:35 GMT In message <48412F89.F8567436@execulink.com>, J <nospam@pigment.inv> wrote []
> My advice would be for people to keep track of when they eat these >foods, and to look for a pattern between consumption and a flare. They [quoted text clipped - 5 lines] >person could avoid one/all of the nightshade vegetables without creating any >nutrient deficiencies. That looks like good advice. Possibly the link in a given person might not be immediate - I recall reading somewhere that for many people a flare today may be caused by excessive UV exposure yesterday or even the day before.
So, keep a diary on the "if in doubt write it out" system - but then look for patterns. No medic is going to spend an hour reading your diary!
As is often said, being ill is a full-time job for a healthy person.
[]
>I think Lupus patients with compromised kidney function, should get their >nutritional advice from a nutritionist at the nephrologist's I agree.
 Signature Andy Taylor [Chair, N E Lupus Group]. <URL:http://www.northeastlupus.org.uk>
Mair - 31 May 2008 18:37 GMT >> In message >> <20a90888-1dcc-4030-ba7d-45fd78df40de@26g2000hsk.googlegroups.com>, [quoted text clipped - 14 lines] > But my searching days are over due to limb and hand problems. > J I have never had a potato that needed dialysis. I wouldn't know the symptoms. I guess that would be Pigmet's department...he is the potato expert of the family.
Be healthy and happy
Mair
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