If one of your parents has yellow teeth, you are more likely to inherit the trait
Smoking is also associated with several non-communicable diseases including diabetes, cataracts, rheumatoid arthritis, and peptic ulcer disease
In many societies, a woman smoking (often in private or among peers) could be associated with sophistication, status, social ease, or luxury not just a habit
Update) Added alternative Spy disguise menu, which lets you choose disguises using just the 1-3 keys
One of the main reasons (Figure 4) was for improving physical and mental capacities (n = 86): for the general state of health (n = 59), for the wellbeing (n = 58), for performance enhancing (n = 13), and for disease prevention (n = 30)