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Biomarker for chronic fatigue syndrome identified

med.stanford.edu

31–40 of 228 posts

Re: Biomarker for chronic fatigue syndrome identified

#31
I'm just astonished by this.

Millions of people (in the US alone!) suffer from this illness and I think everyone has wondered, or heard it wondered, if it's imaginary.

For all these people to know there's something actually physically wrong with them is massive. It'll shift the thinking of everyone in the profession, of their families and friends and colleagues, and of themselves.

It's a huge, huge breakthrough.

Re: Biomarker for chronic fatigue syndrome identified

#32
post #29

Earlier quoted context omitted.

I have to agree with you here - the separation is too good. You just never get anything in the real world that works this well with complex diseases.

AIDS was once considered a very complex disease, but it has a very accurate (HIV) test today. My big concern would be if, like cancer, there are really many diseases and Chronic Fatigue symptoms are common, not differentiating.

That could still be very interesting. Eg. There are some other illnesses like MS where patients can get fatigued in a similar way to CFS, but not always. If we find a similar response between the fatigued and non fatigued MS patients for example, that could still point to something that is going on causing the fatigue in both cases. Ron Davis’s line on this was to point out having one disease doesn’t mean you can’t have any others.

There are a lot of other interesting overlaps showing up. One of the more interesting to me (because I have it) is that about 40% of CFS patients are testing positive for small fiber polyneuropathy on punch biopsies that appear to be autoimmune in origin. Is that itself an underlying cause of some 40% of CFS cases or is it just a common comorbid condition that whatever triggers CFS also triggers?

Re: Biomarker for chronic fatigue syndrome identified

#33
post #13

Earlier quoted context omitted.

I think that this suggestion that CFS might be caused by bad diet is even more irresponsible than telling it is psychological. CFS patients would wish that it were that simple. CFS onset is often abrupt, and can often happen to otherwise very healthy and active people. For example, a common story is that the patient becomes sick from a viral infection and then gets stuck with chronic fatigue syndrome even after the i…

> No one knows the cause yet If we can determine for sure that it's happening a at a much higher rate than in the past, we have a pretty good idea that the cause is the conditions that we live in. Diet that is one thing in which the changes over the years have been similar across different regions. If it was air pollution, the increased rates would show up in some regions but not others. Ditto radiation. I don't thin…

Even today it is very hard to get an accurate CFS dianosis. Patients often are diagnosed with as suffering from a viral infection, or psychological, neurological, or immune disease. They almost always only get a CFS diagnosis after all the other treatments fail. I definitely would not be surprised if it turned out to be present in the past, but misdiagnosed.

One thing that certainly does not help is that the primary symptom of ME/CFS, post-exertional malaise, is counter intuitive. The pain and fatigue comes after a delay, which hides the cause and effect. Everyday physical activity can also be enough to bring back symptoms. This means that if you don't know what you are looking for then ME/CFS will appear to come "out of nowhere", like a mystery chronic illness.

Re: Biomarker for chronic fatigue syndrome identified

#35
post #31

I'm just astonished by this. Millions of people (in the US alone!) suffer from this illness and I think everyone has wondered, or heard it wondered, if it's imaginary. For all these people to know there's something actually physically wrong with them is massive. It'll shift the thinking of everyone in the profession, of their families and friends and colleagues, and of themselves. It's a huge, huge breakthrough.

I've known several people over the years who have had Chronic Fatigue Syndrome, and most of them have at some stage or another had to deal with discrimination from people that told them it was a made up illness. Having a solid test like this will make a phenomenal difference.

Re: Biomarker for chronic fatigue syndrome identified

#37
post #31

I'm just astonished by this. Millions of people (in the US alone!) suffer from this illness and I think everyone has wondered, or heard it wondered, if it's imaginary. For all these people to know there's something actually physically wrong with them is massive. It'll shift the thinking of everyone in the profession, of their families and friends and colleagues, and of themselves. It's a huge, huge breakthrough.

This is promising data but it’s very early. The authors are not really sure what the test is measuring on a cellular level, though they speculate a lot in the discussion, and we can’t yet truly infer a causal link between what’s causing the test result and disease status.

It’s is going to take a lot more validation before we get to the stage where this is clinically useful. For instance, the control group were healthy, what if instead you compared test results in CFS to another disease condition that can mimic CFS, would it still work as well? In the extreme case, the test could just be a generic flag that someone is non-specifically unwell, we just can’t tell from this data alone.

Re: Biomarker for chronic fatigue syndrome identified

#38
post #6

But which is the cause? Perhaps someone convinced they're ill, weakens their own immune system - either through some psychosomatic mechanism, or through associated behaviors.

It's somewhat irresponsible to suggest that this is psychosomatic, even in the face of a highly reliable biomarker. CFS sufferers have had insult added to injury for decades due to physicians dismissing them as hypochondriacs. This is a complex, debilitating syndrome that requires a lot of study. The type of fatigue these individuals experience is a lot more severe than "I'm tired and I don't know why"

It's also irresponsible to suggest, as you do here, that "psychosomatic" means "they're making it up". Even if CFs is a somatoform disorder the sufferers aren't making it up, they genuinely feel fatigued.

Re: Biomarker for chronic fatigue syndrome identified

#39
post #13
post #7

Earlier quoted context omitted.

This reminds me of this quote from an article about Phil Libin, former CEO of Evernote: > Eventually he (Phil Libin) pinpointed the source. "It was the carbs," he said. https://www.businessinsider.com/phil-libin-fasting-routine-2... I think bad eating habits, eating unhealthy food, too much, too often, and too erratically has something to do with the uptick in these conditions.

I think that this suggestion that CFS might be caused by bad diet is even more irresponsible than telling it is psychological. CFS patients would wish that it were that simple. CFS onset is often abrupt, and can often happen to otherwise very healthy and active people. For example, a common story is that the patient becomes sick from a viral infection and then gets stuck with chronic fatigue syndrome even after the i…

You could say that everything is essentially caused by bad diet. Not bad, in the sense that it is junk, but bad in the sense that it is not appropriate in given context.

You can even brute force some congenital diseases with diet/supplements, see Bruce Ames work on it.

https://lifeextensionvitamins.com/drbrucammego.html

Re: Biomarker for chronic fatigue syndrome identified

#40
post #13
post #7

Earlier quoted context omitted.

This reminds me of this quote from an article about Phil Libin, former CEO of Evernote: > Eventually he (Phil Libin) pinpointed the source. "It was the carbs," he said. https://www.businessinsider.com/phil-libin-fasting-routine-2... I think bad eating habits, eating unhealthy food, too much, too often, and too erratically has something to do with the uptick in these conditions.

I think that this suggestion that CFS might be caused by bad diet is even more irresponsible than telling it is psychological. CFS patients would wish that it were that simple. CFS onset is often abrupt, and can often happen to otherwise very healthy and active people. For example, a common story is that the patient becomes sick from a viral infection and then gets stuck with chronic fatigue syndrome even after the i…

Why are you trying to say that psychological illness isn't real?

Psychological illness have high rates of death, they cause years of life lost to disability, and they're serious and debilitating.

Stop pushing ignorant stigma around mental illness.

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