Wednesday, February 10, 2010

CFS and Metabolic Syndrome

[Tom: This study used the "empiric criteria" (Reeves, 2005) for CFS]

Chronic fatigue syndrome is associated with metabolic syndrome: results from
a case-control study in Georgia

Maloney EM, Boneva RS, Lin JM, Reeves WC.

Metabolism. 2010 Jan 25. [Epub ahead of print]

Centers for Disease Control and Prevention, Chronic Viral Diseases Branch,
National Center for Zoonotic, Vector-borne and Enteric Diseases, MS-A15,
1600 Clifton Rd, Atlanta, GA 30333, USA.

We hypothesized that persons with chronic fatigue syndrome (CFS) would have
a higher prevalence of metabolic syndrome compared with well controls, and
that unwell persons with insufficient symptoms or fatigue for CFS (termed
ISF) would have a prevalence of metabolic syndrome intermediate between
those with CFS and the controls. We also sought to examine the relationship
between metabolic syndrome and measures of functional impairment, fatigue,
and other symptoms. Our analysis was based on a population-based
case-control study conducted in metropolitan, urban, and rural areas of
Georgia, United States, between September 2004 and July 2005. There were 111
persons with CFS, 259 with ISF, and 123 controls. Metabolic syndrome was
determined based on having at least 3 of 5 standard risk components
(abdominal obesity, high triglycerides, high blood pressure, elevated
fasting glucose, and decreased high-density lipids) according to the
National Cholesterol Education Program Adult Treatment Panel III definition.
Persons with CFS were 2-fold as likely to have metabolic syndrome (odds
ratio = 2.12, confidence interval = 1.06, 4.23) compared with the controls.
There was a significant graded relationship between the number of metabolic
syndrome factors and CFS; each additional factor was associated with a 37%
increase in likelihood of having CFS. The association of ISF with metabolic
syndrome was weaker (odds ratio = 1.72, confidence interval = 0.94-3.16).
Among persons with CFS, the number of metabolic syndrome factors was
significantly correlated with worse fatigue on a standardized summary
measure of fatigue (r = 0.20, P = .04). In conclusion, CFS was associated
with metabolic syndrome, which further exacerbated fatigue. Published by
Elsevier Inc.

PMID: 20102774 [PubMed - as supplied by publisher]

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