Breathing car smoke increases the risk of heart attack

One study showed an increased risk of heart attack in six hours after we inhaled smoke from cars and other motor vehicles.

The BBC said that scientists from London's University of Epidemiology and Tropical Medicine in the UK wanted to understand the relationship between air pollution levels and hourly risk of heart attack. So they looked at the records of nearly 80,000 people who had heart attacks in England and Wales, and referenced data on air pollution caused by vehicles.

The results showed that if people were exposed to toxic air (such as ozone, CO, NO ₂ and SO ₂ ), the risk of heart attack would increase in the next 6 hours and then gradually decrease.

'Our research shows that air pollution is not one of the key factors for heart attack. For example, if the atmosphere has a moderate level of pollution, the risk of human heart attack within 6 hours will only increase by 5% compared to the low level of pollution , 'said Krishnan Bhaskaran, team leader.

Motor vehicle smoke does not directly cause heart attacks, but increases the risk. But if people are in constant contact with it, our health will be worse and life expectancy is reduced.'This finding proves that the risk of human heart attack increases instantly, in about 6 hours, after we breathe in exhaust from vehicles, ' said Professor Jeremy Pearson, medical director of the British Heart Association. , stated.

According to Pearson , toxic substances in the air can make human blood vessel walls thicker. The thicker the blood vessel, the greater the risk of blood clots - the cause of heart attack - increases.

'Our advice to everyone remains unchanged. If someone is diagnosed with heart disease, he or she should limit travel in areas with high levels of air pollution, such as roads with many motorized vehicles , 'Pearson said.