Heart attacks - that's another danger, which are roads with heavy traffic. This is the conclusion of scientists at the London school of hygiene and tropical medicine in the framework of his research. They analyzed 80 patients with heart attacks, registered in England and Wales, and then compared them to the level of air pollution in these areas. It was found that the risk of heart attack increases dramatically within six hours after inhalation of air with a high concentration of exhaust gases. "Pollution causes thickening of the blood, which increases the risk of heart attack," said Jeremy Pearson, Director of the British heart Foundation. Apparently, the exhaust gases contribute to the emergence of the attack, even though they are not its direct cause. Interestingly, earlier American scientists claimed that air pollution near roads negatively affect memory and cause Alzheimer's disease. However, Russians are such "horror stories" to anything: car free Day in Moscow traditionally met tubes.