Particulate air pollution changes blood pressure

Research studies on wood smoke and other air pollution.

Particulate air pollution changes blood pressure

Postby Wilberforce » Mon Oct 22, 2012 8:54 pm

Blood Pressure Changes and Chemical Constituents of Particulate Air Pollution:
Results From The Healthy Volunteer Natural Relocation (HVNR) Study
Shaowei Wu et al
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Background: Elevated blood pressure (BP) has been associated with particulate matter (PM) air pollution, but associations with PM chemical constituents are still uncertain.

Objectives: We investigated associations of BP with various chemical constituents of fine particulate (PM2.5) during 460 repeated visits among a panel of 39 university students.

Methods: Resting BP was measured using standardized methods before and after the university students relocated from a suburban campus to an urban campus with different air pollution contents in Beijing. Air pollution data were obtained from central monitors close to student residences. We used mixed-effects models to estimate associations of various PM2.5 constituents with systolic BP (SBP), diastolic BP (DBP) and pulse pressure.

Results: An interquartile range increase of 51.2 μg/m3 in PM2.5 was associated with a 1.08-mmHg (95% CI, 0.17 to 1.99) increase in SBP and a 0.96-mmHg (95% CI, 0.31 to 1.61) increase in DBP on the following day. A subset of PM2.5 constituents, including carbonaceous fractions (organic carbon and elemental carbon), ions (chloride and fluoride) and metals/metalloid elements (nickel, zinc, magnesium, lead and arsenic), were found to have robust positive associations with different BP variables, though robust negative associations of manganese, chromium and molybdenum with SBP or DBP also were observed.

Conclusions: Our results support relationships between specific PM2.5 constituents and BP. These findings have potential implications for the development of pollution abatement strategies that maximize public health benefits.
• The Surgeon General has determined that there is no safe level of exposure to ambient smoke!

• If you smell even a subtle odor of smoke, you are being exposed to poisonous and carcinogenic chemical compounds!

• Even a brief exposure to smoke raises blood pressure, (no matter what your state of health) and can cause blood clotting, stroke, or heart attack in vulnerable people. Even children experience elevated blood pressure when exposed to smoke!

• Since smoke drastically weakens the lungs' immune system, avoiding smoke is one of the best ways to prevent colds, flu, bronchitis, or risk of an even more serious respiratory illness, such as pneumonia or tuberculosis! Does your child have the flu? Chances are they have been exposed to ambient smoke!
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