Most research points to some level of benefit in the use of air purifiers. Also, research shows it helps not only allergic or asthmatic patients, but anyone exposed to sufficiently hazardous indoor air pollution.
In a study involving 35 healthy college students in Shanghai, China, the group that remained 2 weeks in an air purified environment had remarkably reduced biomarkers of inflammation, coagulation, vasoconstriction, lung function, blood pressure and fraction exhaled nitrous oxide.
As for specific conditions, studies show improvement in the health of allergic people. The same can be said for asthma management .
An important benefit of air purifiers refers to cardiovascular diseases. Particulate matter smaller than 2.5 micrometers is capable of triggering a chain of reactions (including oxidative stress, inflammation, autonomic imbalance, etc) that may lead to “vasoconstriction, endothelial dysfunction, increased blood pressure (BP) and heart rate, myocardial ischemia, impaired heart rate variability (HRV), repolarization abnormalities, arrhythmias, and enhanced thrombotic and coagulation potential.
Longer-term exposures have been linked to the chronic progression of atherosclerosis as well as the increased incidence of overt hypertension and diabetes mellitus”
