sucrose and fructose intolerance
#362926 - 01/14/11 04:38 PM
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I have found many websites that list sucrose as being unsafe for fructose intolerance. Syl, you always say sucrose is safe dont you?
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Sucrose is unsafe for hereditary fructose intolerance that is a serious genetic disorder which requires the restriction of all source of fructose.
Fructose malabsorption is a different disorder. In this disorder when fructose and glucose occur in precisely equal amounts such as sucrose the body absorbs both sugars with no difficulty. When fructose occurs in excess of glucose the body handles the excess fructose differently and it is usually absorbed in the small intestine. Some people cannot absorb the excess fructose. It is malabsorbed and passes through to the colon where it is rapidly fermented by bacteria producing gas and byproducts. In some people the excess fructose may act as an osmotic laxative producing D.
There is a lot of misinformation about this point on the Web. This point is explained well by the dietitian that wrote the article in the first link in my signature.
If you want a detailed description of the physiological process have a look at Malabsorption of Fructose and Other Short-chain Carbohydrates. In particular, read the section were it says "Because of this, the fructose released from the hydrolysis [breakdown] of sucrose is generally completely absorbed." In otherwords, in moderation white/brown sugar is not a problem for individuals with fructose malabsorption.
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Thanks for the info I was getting confused, How many grams of added sugar can you handle a day? Are you always born with the fructose intolerance or can you develop that too?
I got very sick the other day, could it be from flavoring my water with cucumbers? I didnt think about it, but I guess you are drinking the fructose right?
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Hereditary fructose intolerance is a genetic disorder that you inherit. It is usually detected in childhood.
A limit on the number of grams of sucrose that a person with fructose malabsorption has not been determined. In fact it has not been determined if there really is a limit. If there is on it is anticipated to be many tens of grams. If you use sugar in moderation then you are unlikely to have any problems.
Cucumbers don't have excess fructose. Did you make the flavored water yourself?
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STABLE: ♂, IBS-D 50+ years - Science of IBS
The FODMAP Approach to Managing IBS Symptoms
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Yes I made it, I just put cucumber slices in water. Tastes great, so it should be safe?? That's good news. I guess it was something else that made me sick. May have been the cough medicine i took.
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Your cucumber drink is definitely safe. Cough medicines can definitely contain things that may effect IBS symptoms. Did you check the non-active ingredients. Some contain high-fructose corn syrup or artificial sweeteners.
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STABLE: ♂, IBS-D 50+ years - Science of IBS
The FODMAP Approach to Managing IBS Symptoms
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Yay, so yea everyone who is looking for a great drink should try cucumber water, its amazing.
Yea the cough medicine was not safe but I had such a little amount I didnt think that was it because I have been extremely sick for the past week. I guess it was that plus other little things I did wrong. I cant believe it caused such a horrible attack tho. I was thinking the cucumber water at first becasue I drank a whole lot of it. Good to know I can keep drinking it, thanks!
I have another question for you, could it be possible for you to have a major reaction to little amount of fructose (which I seem to have), yet have a much greater tolerance for fructans (I still find I can eat a good amount of wheat products- more than two slices of bread anyways. Could it be because I run and my body uses it up?
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You asked an excellent question.
I cannot tolerate even small amount of excess fructose. On the other hand I can handle a considerable amount of fructans from wheat. However, if I over eat wheat I notice some discomfort the following day.
Some people malabsorb all the FODMAPs while others only have difficult with one or two. Individual physiology and colonic flora composition can be different in this regard producing lots of variations in response to amounts of FODMAPs anyone can handle. Generally speaking overconsumption of any FODMAP by a normal individual is liable to produce GI discomfort too.
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STABLE: ♂, IBS-D 50+ years - Science of IBS
The FODMAP Approach to Managing IBS Symptoms
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Oh, interesting..that makes sense thanks.
Since this past attack Ive been feeling really weird- tired, weak, short of breath, sore throat that comes and goes, and like I have a pocket of gas stuck below my chest and down my spine. I have a lot of air in my GI system and I believe it is giving me a temporal headache. Have you ever had an attack that led to this?
Also, I bought this probiotic made of cellulose, water, and silica. That should be ok right?
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My blood test results show that I have a moderate milk allergy. Blood tests are accurate right? Should I avoid foods that contain trace dairy or that are made on equipment with dairy? My doctor didn't even know!
Another thing it showed was increased amylase, is it true that fructose malabsorption could cause this?
Thank you.
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Who did these tests? An allergy doctor or an on-line testing company? Are you taking about a GP or ND when you say 'My doctor'?
Blood test for allergies are particularly reliable. Fructose malabsorption is unrelated to increase amylase. Increased amylase can be due to a variety of things. Notice that a variety of things include aspirin and birth control pills can affect the results. What does your GP say about the increased amylase.
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STABLE: ♂, IBS-D 50+ years - Science of IBS
The FODMAP Approach to Managing IBS Symptoms
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A regular blood test from my medical doctor. It also showed egg allergy. This was not the delayed antibody test if that what you mean.
He says the increase amylase I should have more tests becuase it could be something with the pancreas or an obstruction. I found a study about fructose and amylase/lipase and wondered if it was true. My liver enzymes were also high.
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I found the 2001 study. They think fructose malabsorptio might produce mild pancreatitis. I have never shown a high amylase level and I am a fructose malabsorber  I will do a bit more searching to see if anyone has confirmed this finding.
Is the doctor planning on doing any follow-up for the high amylase?
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STABLE: ♂, IBS-D 50+ years - Science of IBS
The FODMAP Approach to Managing IBS Symptoms
Evidence-based Dietary Management of Functional GI Symptoms: The FODMAP Approach
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Yea thats the one that I saw. I was wondering maybe becuase you have the fructose malabsorption under control, maybe your amylase levels are normal? So with the grade 2 allergies, do you know if I am supposed to avoid products that are made on the same equipment as milk and eggs? Also, the allergy blood test also tested for beef which was negative. Could it have been negative becuase I dont eat beef and haven't for years? I know most with IBS are just intolerant to the beef but I was just wondering how it works and if its possible I am allergic. thanks for your help!
The doctor didnt seem to concerned but Im supposed to go to a specialist and get a colonoscopy and endoscopy, dont want to tho but I really should:(
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That is the only paper that has been published on the topic so it does look like it generated much interest. I don't believe type 2 reactions require that sort of precautions particularly since your doctor doesn't seem to be concerned. The grade or type is a indicator of the type of reaction not the intensity.
It is definitely a good idea to get colonoscopy and endoscopy. I am a bit surprised you have already had these done. Good luck 
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STABLE: ♂, IBS-D 50+ years - Science of IBS
The FODMAP Approach to Managing IBS Symptoms
Evidence-based Dietary Management of Functional GI Symptoms: The FODMAP Approach
FODMAP Chart & Cheatsheet
The Role of Food & Dietary Intervention in IBS
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Yea I know, thanks:)
I have another question about fructans. I know Ive seen that chart about foods high in fructans. But I was wondering if looking at the carbohydrate ratio helpful to estimating how many frutans a wheat product would have, or is it unrelated? For example a slice of bread has about 15 grams and a bagel has about 30. Would you guess that it has double the amount of fructans considering the ingredients are similar? IS there any wheat bread that is very low in fructans?
Ever make rice bread? The kind they sell in the store uses fruit juices. thank you!
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Fructans are an indigestible carbohydrate that acts like SF. The amount of fructans in wheat flour is about 1-4%. It is significantly higher in whole wheat flour. It is possible that as the carbohydrate content of wheat increases the amount of fructans increases too. However, since other carbohydates usch as sugar may be added to a food when it is prepared. There is no guarantee that the amount of carbohydrate given on the label only comes only from wheat. However, you could say the more wheat a product contains the more fructans it will contain too.
I have not heard of a low fructan wheat bread and I sort of doubt that is exists.
I have never made rice bread.
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STABLE: ♂, IBS-D 50+ years - Science of IBS
The FODMAP Approach to Managing IBS Symptoms
Evidence-based Dietary Management of Functional GI Symptoms: The FODMAP Approach
FODMAP Chart & Cheatsheet
The Role of Food & Dietary Intervention in IBS
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