<human>:  What are the biggest risks of smoking cigarettes?
<bot>: The biggest risks of smoking cigarettes include an increased risk of many serious health conditions, such as lung cancer, heart disease, stroke, and various lung diseases. It can also lead to premature death and an increased risk for various types of cancer, including bladder, throat, esophageal, and pancreatic cancer. Additionally, smoking can cause a variety of other health problems, including decreased fertility and an increased risk of osteoporosis.