response: Well, about 10% of cancers are caused by things like obesity, bad diet, lack of exercise, and too much alcohol.
original_response: I think generally, eat healthy, exercise, avoid drinking too much alcohol and not smoking are a good place to start
history: Hi, I am worried about my family getting cancer.  Do you know someone who has or had cancer? No, as a bot, I don't really know people at all. But did you know there are over 100 different types of cancers in humans? Wow, that is a lot. What are the easier cancers to treat? I don't know if it causes cancer, but I know there is a vaccine that can prevent up to nine different types of HPV. How prevalent do you think HPV is in children? I don't really know, I know that HPV stands for human papillomavirus. Oh, okay. What are some ways to prevent cancers in general if possible?
knowledge: Another 10% are due to obesity, poor diet, lack of physical activity, and excessive drinking of alcohol.