{"id":511,"date":"2019-01-15T08:38:19","date_gmt":"2019-01-15T08:38:19","guid":{"rendered":"https:\/\/smartairfilters.com\/mn\/?p=511"},"modified":"2019-06-01T07:03:54","modified_gmt":"2019-06-01T07:03:54","slug":"smog-air-pollution-kill-deaths","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/mn\/en\/blog\/smog-air-pollution-kill-deaths\/","title":{"rendered":"Smog doesn\u2019t kill like you think it does"},"content":{"rendered":"

The\u00a0World Health Organization tallied up<\/a>\u00a0all the deaths due to outdoor air pollution based on different causes, and the major killer isn\u2019t what most people think.\u00a0<\/span><\/p>\n

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Asthma, lung cancer, and emphysema come to mind when we think about air pollution.\u00a0But lung problems are only a small portion of the deaths caused by air pollution. Lung problems don\u2019t even count for half.<\/span><\/p>\n

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How exactly do people die from air pollution?<\/span><\/strong><\/h3>\n

This graph shows the three major categories of deaths from air pollution. What would you think goes into those boxes?<\/span><\/p>\n

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My first thought would be lung cancer. Survey says?<\/span><\/p>\n

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Just 14%! Not nearly as large as I imagined.<\/span><\/p>\n

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Well, OK, lung cancer is just one type of lung problem. How about emphysema, bronchitis, and other lung diseases?<\/span><\/p>\n

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Hmm, we\u2019re still only at 28% of deaths due to air pollution. So what\u2019s hiding in that big blue piece of the pie?<\/span><\/p>\n

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Heart attacks, strokes, and other diseases in our blood vessels. Really?\u00a0<\/span>It makes so much sense to look at our lungs because that\u2019s where the air goes. But it turns out that we\u2019re looking in the wrong direction. We should\u2019ve been looking here:<\/span><\/p>\n


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Does air pollution really affect our heart and blood vessels? Here are three points of evidence.<\/span><\/p>\n

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1. More people have heart attacks on days with bad air pollution<\/strong><\/span><\/h3>\n

A study in Boston<\/span>\u00a0<\/span><\/a>found that on days with higher particulate air pollution (blue line), more people had heart attacks (red line).<\/span><\/p>\n

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Now, we\u2019re not talking about a wild epidemic of heart attacks. The base odds of heart attacks on any given day are low, probably one in millions. So a 50% increase is important, but it moves the odds from 1 in a million to 1.5 in a million.<\/span><\/p>\n

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2. Wearing a mask in polluted Beijing reduces blood pressure<\/strong><\/span><\/h3>\n

But hey, heart attacks are for unhealthy old people, right? I\u2019m just 32 years old.\u00a0Well,\u00a0two studies<\/a>\u00a0<\/span>randomly assigned healthy adults in Beijing to wear a mask outside or not. No one had a heart attack, of course, but people without a mask had higher blood pressure and lower heart ratevariability.<\/p>\n

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3. Breathing purified air improves blood inflammation and constriction of veins<\/span><\/strong><\/h3>\n

OK, OK. But maybe you\u2019re a healthy young person, just 20 years old. Maybe your lungs are even \u201cused to\u201d the pollution. My friends in China joke that Chinese people have the strongest lungs in the world.<\/span><\/p>\n

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Researchers in Shanghai randomly assigned<\/span><\/a>\u00a0healthy college students\u00a0to use a real purifier or a fake purifier for 48 hours in their dorm rooms. Here\u2019s what the\u00a0<\/span>PM2.5<\/span><\/a>\u00a0levels were like in their dorm with a fake purifier (blue) and a real purifier (yellow).<\/span><\/p>\n

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They tracked all sorts of effects on biomarkers. When they looked at effects on blood inflammation, the effects were pretty big!<\/span><\/p>\n

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Same for blood coagulation:<\/span><\/p>\n

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And constriction of veins:<\/span><\/p>\n

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But when they looked at effects on lung function, the effects were tiny and not statistically significant:<\/span><\/p>\n

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That blew my mind. All this time we were looking in the wrong place!<\/span><\/p>\n

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If someone in Beijing or Delhi fell over and died of a heart attack, would most people think, \u201cAh, air pollution\u2026\u201d? Before I saw this research, I wouldn\u2019t have.<\/span><\/p>\n

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Bottom line:\u00a0<\/strong>Even if we aren\u2019t coughing, even if we don\u2019t have asthma, air pollution is still taking a toll on our heart and blood vessels.<\/span><\/p>\n

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<\/p>","protected":false},"excerpt":{"rendered":"

The\u00a0World Health Organization tallied up\u00a0all the deaths due to outdoor air pollution based on different causes, and the major killer isn\u2019t what most people think.\u00a0 \u00a0   Asthma, lung cancer, and emphysema come to mind when we think about air pollution.\u00a0But lung problems are only a small portion of the … Read more<\/a><\/p>\n","protected":false},"author":4580,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-511","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts\/511","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/users\/4580"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/comments?post=511"}],"version-history":[{"count":3,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts\/511\/revisions"}],"predecessor-version":[{"id":514,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts\/511\/revisions\/514"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/media?parent=511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/categories?post=511"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/tags?post=511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}