Keep in mind as well that it is not any one event or factor that causes cancer. It is more likely a combination of many factors over time. Whether they are personal or outside, environmental risk factors are a part of our lives. However, we do have choice and control over some of them. For example, we can quit smoking, avoid getting too much sun, and eat a healthy diet.
Scientists learn about the causes of cancer from specific observations.
They also look for patterns of cancer in large groups of people. Research studies and trials study the toxic effects of substances on animals, tissues or cells. They determine what the risks and effects are by testing how strong and how reliable the scientific proof is. People often worry that common things in their environment can increase their risk of cancer. Here is what research studies have found out about some of these concerns.