Smoking tobacco is so harmful to the body that it changes a person's immune system, leaving them vulnerable to more disease and infection even years after they've quit, a new study found. Video ...

Updated: 1:12 PM CST Feb 14, 2024 By Jen Christensen, CNN Smoking's effects on the immune system can last for years, study finds Updated: 1:12 PM CST Feb 14, 2024 ...

Smoking tobacco is so harmful to the body that it changes a person's immune system, leaving them vulnerable to more disease and infection even years after they've quit, a new study found. Video ...

Smoking, the study found, seemed to have long-term epigenetic effects on the immune system's two major forms of protection: the innate response and the adaptive response.