This week in health news, from Scott LaFee of the Sanford Burnham Prebys research institute. As bad as air quality has been in parts of the U.S. due to smoke from the Canadian wildfires, there are places where it’s just bad on a regular basis. Based on IQAir’s World Air Quality report, the 20 most-air-polluted cities all are currently located in Pakistan, China, India and Iraq. The U.S.
As bad as air quality has been in parts of the U.S. due to smoke from the Canadian wildfires, there are places where it’s just bad on a regular basis. Based on IQAir’s World Air Quality report, the 20 most-air-polluted cities all are currently located in Pakistan, China, India and Iraq.
The U.S. city with the worst air quality is Oakridge, Tenn., checking in at No. 382 on the list. Much-maligned Los Angeles comes in at No. 2,891.People who run marathons are indisputably to be admired, and the best of them possess a sort of loping grace as they bound 26.2 miles from start to finish. Sometimes, though, that finish line does not come soon enough.
Among marathoners, it’s called “catching the gingerbread man,” a picturesque term for what is also known as runner’s diarrhea, a condition that involves the sudden, explosive need to empty one’s bowels in the heat of a race. Though runners take precautions, the act can become a biological imperative. During periods of physical stress, the body redirects blood away from organs not necessary in the moment, which includes the intestines. The lack of blood flow to the gastric tract causes disruptions to normal function, irritation and, ultimately, pressing movement of the bowel sort.
Such moments are not uncommon, including in high-profile marathon races. During the 2005 London Marathon, for example, Paula Radcliffe suffered multiple episodes, but still proved victorious in the end.Incidence rates of HIV infections declined 12 percent between 2017 and 2021. That’s the good news. The less good news is that the infection rate decline was uneven.
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