C-Reactive Protein for Measuring Inflammation
C-reactive protein, found
in trace amounts in healthy people, has quickly emerged as the leading marker
of systemic (or body-wide) inflammation. You'll be hearing more and more about
it: People with elevated CRP levels are four and one-half times more likely to
have a heart attack, compared with people who have normal levels of the
protein. Furthermore, a variety of serious diseases are associated with high
blood levels of CRP.
Normal
"high-sensitivity" CRP levels are less than 0.11 milligrams per
deciliter of blood (mg/dL). Moderate CRP levels of
0.12-0.19 mg/dL are a cause for concern, and high CRP
levels are 0.20-1.50 mg/dL. However, CRP levels can
go up to 400-500 mg/dL in seriously ill people.
CRP levels are elevated
in many different diseases and conditions.
Heart
disease. High CRP levels are a
better indicator than either total cholesterol, low
density lipoprotein cholesterol, or homocysteine in predicting the risk of a
heart attack, as well as of death in the first month after coronary-artery
bypass surgery. CRP is present in lesions (commonly, but incorrectly referred
to a cholesterol deposits) that form on blood vessel walls, but not in normal
blood vessel walls. CRP is also strongly associated with the rupture of these
lesions, which can lead to dangerous blood vessel clots.
Blood sugar disorders. Insulin resistance,
Syndrome X, and diabetes are all associated with increased levels of CRP. This
is significant because each of these conditions increases the risk of coronary
artery disease. High CRP levels have also been found in patients with
Alzheimer's disease, which is increasingly being viewed as an inflammatory
brain disorder. Not surprisingly, people with arthritis and cancer also tend to
have high CRP levels.
Dental
disease. People with periodontal
disease also have elevated CRP levels. This elevation may be the result of
chronic infection or inflammation of the gums. It may also reflect inadequate
levels of antioxidants, which would promote healing.
Smoking. Tobacco smoke raises CRP
levels, and some researchers have found that they remain elevated in
ex-smokers.
Overweight
and obesity. Perhaps most interestingly, being overweight increases CRP levels. The
reason is that adipose cells, particularly those that form around the abdomen
(belly) produce large amounts of CRP and interleukin-6 (IL-6), both of which
are powerful promoters of inflammation. The implications are significant: being
fat is partly an inflammatory disorder, and body fat promotes inflammation.
This may be part of the reason why being overweight increases the risk of
diabetes, heart disease, and other disorders. CRP levels are generally elevated
in overweight children as well as adults.
The good news is that
eating fewer refined carbohydrates and high-glycemic
foods, taking natural supplements, engaging in moderate physical activity, and
losing weight can significantly lower CRP levels. A high-quality, physician
recommended natural Vitamin E, a specific fish oil supplement called Samolinic and possibly a combination of natural plant enzymes
should be used to reduce CRP.