Smoking even in moderation, such as once a month, introduces harmful chemicals into the body, raising concerns about long-term health effects. While the body has mechanisms to repair damage, these processes become less effective with age, making the risks associated with smoking more significant later in life. The potential for a single exposure to carcinogenic substances to lead to cancer is acknowledged, with each instance increasing the overall risk, albeit slightly. Similarly, with alcohol consumption, the body can detoxify and repair itself, but age-related decline in these mechanisms may elevate risks. Ultimately, while infrequent smoking is unlikely to cause cancer, it cannot be ruled out entirely.