Celiac.com 05/06/2008 - In the majority of people with celiac disease,
strict adherence to a gluten-free diet can result in a quality of life
that is on par with non-celiacs. Still a small percentage of celiacs
seem to suffer from persistent gastrological discomfort in the form of
irritable bowel or irritable-bowel-like symptoms. Very few studies have
been done on persistent gastrological problems in adults with celiac
disease. Those that have been done rely upon univariate statistical
analysis in clinical samples at the secondary or tertiary care level
and fail to assess the potential influence of non-celiac disease
specific factors, which are considered to be a risk factor of irritable
bowel syndrome (IBS), such as mental disorders, or gender.
A
team of researchers made up of doctors Winfried Hauser, Frauke Musial,
Wolfgang Caspary, Jurgen Stein, and Andreas Stallmach set out to
determine rates of irritable bowel syndrome, irritable bowel
syndrome-related symptoms, and consecutive health care-seeking behavior
and their influence upon health-related quality of life (HRQL) and any
conceivable bio-psychosocial factors influencing adult patients with
celiac disease. The research team made a medical and socio-demographic
survey of 1000 adult celiac patients from the German Celiac Society by
post. The medical portion of the survey included bowel history. The
team also had patients fill out a Short Form Health Survey (SFHS),
along with the Hospital Anxiety and Depression Scale.
516 of
the questionnaires came back completed. Respondents were similar in
gender ratio and median age from the whole membership directory of the
German Celiac Society, a group of more than 18,000 people who reported
suffering from celiac disease at the age of 18. Of these, 213 (41.3%)
had a diagnosis of celiac disease that was made by a duodenal biopsy,
37 (7.2%) by serological tests (celiac disease-specific antibodies), 34
(6.6%) using stool tests for trans-glutaminase antibodies, and 232
(45.0%) using intestinal biopsy and serological tests.
A total
of 446 patients indicated that they had biopsy-proven celiac disease. Of these 446
patients, 18 were excluded because they indicated adherence to a
gluten-free diet for less than 1 year. Sixteen patients were tossed out
because they reported a major non-adherence to the gluten-free diet. Thus,
the study group was confined to 412 patients with self-reported
biopsy-proven celiac disease who were on a strict gluten-free diet for at least one year. The survey showed that out of these 412 patients that met the criteria, 96 patients, or just over 23% met
modified Rome I criteria for Irritable Bowel Syndrome. Of those 96
patients, 76 patients, or nearly 80%, made an effort to get help, both
medical and non-medical, as a result of the bowel symptoms (we’ll call
the patients who sought help "irritable bowel syndrome patients").
Irritable bowel syndrome-like symptoms were shown to drive SFHS scores sharply downward. Mental
health disorders, being female, falling off the gluten-free diet
all contributed to a greater likelihood of irritable bowel syndrome symptoms.
The
results of the study seem strengthen the bio-psychosocial model of irritable bowel syndrome, in which biological and psychological factors
are understood to affect the clinical manifestation of celiac disease.
Under this model, irritable bowel syndrome-like symptoms in adults with
celiac disease are understood through a combination of clinical and
socio-psychological mechanisms. This model leads doctors to an
understanding of celiac disease and other gastro-intestinal ailments
that goes beyond simple biological or psychological factors alone, and
looks at factors like adverse life events, stress, and hypochondriasis
among others.
Limited studies indicate that gender differences
in visceral perception, cardio-autonomic responses, gastrointestinal
motility, and brain activation patterns to visceral stimuli are a
factor in irritable bowel syndrome. Gender differences in psychosocial
factors have not been fully studied.
The results of this study
also support the need for further investigation to determine exactly what
factors contribute to the bio-psychosocial model of what is called
’celiac irritable bowel syndrome.’
Future psycho-physiological
studies in patients with celiac disease and irritable bowel syndrome
should look to determine if psychological discomfort can prolong
mucosal inflammation, reduce visceral pain thresholds, or disturb gut
motility.
In the event that the right psychotherapeutic
treatment for irritable bowel syndrome-like symptoms and/or mental
disorder serve to improve reduced HRQOL in adult patients with celiac
disease and irritable bowel syndrome-like symptoms, it might be
necessary to take a second look at interventional practices.
So,
in a nutshell, this all means that things like mental health, gender,
and other non-clinical factors might play a role in irritable bowel
syndrome-like symptoms in people with celiac disease, and that further
study is needed to sort out all of the possibilities and determine if
there might be better ways to treat celiac disease that will reduce or
eliminate irritable bowel syndrome-like symptoms.
Psychosomatic Medicine 69:370 –376 (2007)