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Causes of ischemic stroke are thrombosis and arteriosclerosis due to microvascular disease and restricted blood flow

The harmful substances in tobacco smoke, including carcinogens such as benzene, arsenic, and formaldehyde, can damage the DNA in lung cells, leading to the development of cancer

A summary of research by Bofetta, Petal regarding cancer risk from smokeless tobacco use states "Although epidemiological data from the USA and Asia show a raised risk of oral cancer in those who use smokeless tobacco (overall relative risk 26 [95% CI 13-52]), these are not confirmed in northern European studies (10 [07-13])

Results Participant characteristics A total of 193 participants were eligible for and completed the web-based survey, with a median completion time of 23 minutes

Morris and H