shock! Second-hand smoke greatly increases the risk of stroke

July 13, 2015 - In the United States, approximately 800,000 people suffer from stroke each year, and one out of every 19 deaths is related to stroke, and stroke is the primary cause of mobility problems. A recent study showed that secondhand smoke can increase the risk of stroke in non-smokers by 30%.

The researchers used a large survey of data from Caucasians and African Americans over the age of 45 to find that even after correcting for some known factors that can cause stroke, such as hypertension, diabetes and heart disease. Non-smokers still have a 30% risk of stroke.

The study currently includes approximately 22,000 volunteers, 23% of whom report exposure to secondhand smoke. From April 2003 to March 2012, a total of 428 people had a stroke. The researchers further analyzed the type of stroke and found that most stroke patients were ill due to cerebral vascular occlusion.

Although not all studies have duplicated the relationship between secondhand smoke exposure and stroke, the health risks of secondhand smoke have become increasingly clear.

The researchers pointed out that some of the previous studies were limited by the research perspective, and the correction of some potential factors was different. In addition, because the measurement methods and data sources are different, not all studies consider the subtype of stroke. In-house assessments, and some studies were limited by small sample sizes, so the relationship between second-hand smoke exposure and stroke was not consistently confirmed.

Overall, the study is based on a large sample population study that, after correcting for some factors that can cause stroke, found that non-smokers exposed to second-hand smoke would increase the risk of stroke, which provided a more stringent tobacco control policy. Epidemiological research basis.