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Sitting in traffic can certainly be infuriating enough to raise your blood pressure. But new research shows that traffic can raise your blood pressure and put your heart at risk in a more direct way - by exposing you to the pollution in exhaust fumes...
Scientists at the University of Michigan, led by Dr. Robert Brook, found that the quality of air you breathe can immediately increase your blood pressure, and cause unhealthy changes in your blood vessels that last for hours and perhaps even days. The study measured the effect of air pollution in healthy people in two cities - Ann Arbor, Mich., and Toronto - where participants were exposed in the lab to the same amount of particulates and ozone that would be found near a local highway. People who breathed in polluted air registered higher blood-pressure readings a short time after exposure, compared...
...different processes may be occurring as we inhale unclean air. First, the fine matter triggers changes in the central nervous system, causing a switch from the more controlled regulation of body processes to a more instinctive, automatic fight-or-flight response. This revs up the heartbeat and causes blood pressure to spike as the body may be responding to the presence of foreign, potentially dangerous particles in the air. (See pictures of the world's most polluted places...
Once the immediate onslaught of pollution is gone, blood pressure drops back down. But the damaging effects persist. Particulates can lodge deep in the lungs, where they activate another process - inflammation, which kicks in over the 24 hours after exposure. The inflammatory response can stiffen blood vessels and cause longer-term damage to blood-vessel flexibility and their ability to absorb changes in blood flow from the heart. Weakened blood vessels can increase the risk of heart disease or stroke...
...demand the Swedish government condemn this groundless article. This is an outright blood libel.' DANIEL AYALON, Israel's Deputy Foreign Minister, on an article published in a Swedish newspaper that accused Israeli soldiers of harvesting organs from dead Palestinians...