Final answer:
The exact number of people who suffer from at least one serious illness from smoking compared to the number of people who die from smoking-related diseases is not mentioned. However, smoking causes about six million deaths each year and as many as half of all people who smoke tobacco die from it, indicating that the number of people suffering from serious illness from smoking is likely higher than the number of smoking-related deaths.
Step-by-step explanation:
Based on the information provided, it is not possible to determine the exact number of people who suffer from at least one serious illness from smoking compared to the number of people who die from smoking-related diseases. However, it is mentioned that smoking causes about six million deaths each year and is the single greatest cause of preventable death worldwide. It is also stated that as many as half of all people who smoke tobacco die from it. Therefore, it can be inferred that the number of people suffering from at least one serious illness from smoking is likely to be higher than the number of people who die from smoking-related diseases.