<human>:  What are the biggest health risks associated with smoking cigarettes?
<bot>: The biggest health risks associated with smoking cigarettes include an increased risk of developing lung cancer, heart disease, stroke, and other forms of respiratory disease as well as a higher risk of developing various kinds of cancer. Smoking can also make it more difficult for a person to stay physically active and healthy, and can cause damage to the skin, teeth, and gums. Smoking during pregnancy can also put the unborn baby at risk for various health problems.