CIS

What CIS Means in Everyday Medical Language

The Cancer Information Service, often called CIS, is a free and confidential program run by the National Cancer Institute. It is designed to help people who have questions about cancer by providing clear, easy-to-understand information. Whether you are a patient, a family member, a caregiver, or even a healthcare provider, CIS staff are trained to answer your questions about many aspects of cancer. This includes information about cancer prevention, screening tests, symptoms, treatment choices, clinical trials, and how to live with and cope with cancer.

Why CIS Can Matter in Cancer Care

Cancer can be overwhelming, and it’s common to feel confused or unsure about what to do next. CIS helps by offering personalized responses that make complicated information easier to understand. For example, if you want to know what to expect from a certain treatment or how to manage side effects, CIS can explain these in plain language. They also provide support for quitting smoking, which is important because smoking can increase cancer risks and affect treatment results. Having access to trustworthy information can help you feel more confident and supported as you face cancer.

What Patients Might See or Hear About CIS

You might hear about CIS from your healthcare team as a recommended resource for learning more about cancer. You may also come across CIS when searching for reliable cancer information online or in printed materials. The service is available by phone at 1-800-4-CANCER (1-800-422-6237) or through a live chat on the National Cancer Institute’s website. CIS operates Monday through Friday, 9 a.m. to 9 p.m. Eastern Time, and offers help in both English and Spanish.

What CIS Does Not Automatically Mean

It’s important to know that CIS is an educational and support service, not a medical provider. CIS staff do not give medical advice, make diagnoses, or replace your doctor’s care. The information you receive from CIS is meant to complement the guidance from your healthcare team. Always discuss any information or questions you have with your doctor before making decisions about your treatment or care.

Practical Questions to Ask Your Care Team About CIS

If you decide to contact CIS or want to learn more, you might ask your healthcare provider how to best use the information you get from CIS. Questions could include: What topics should I ask about? How can CIS support me alongside my medical care? Are there specific resources or programs CIS can connect me with? Understanding how CIS fits into your overall care can help you get the most benefit from this service.

Using CIS Alongside Your Healthcare Team

Remember that CIS is a trusted source of cancer information designed to help you understand your condition and options better. Using CIS together with your healthcare team can make you feel more informed and supported. If you have questions about cancer prevention, treatment, clinical trials, or quitting smoking, reaching out to CIS is a good step. Their trained specialists are ready to listen and provide clear, personalized information to help you navigate your cancer journey.

Safety and Context

This information about CIS is educational and cannot replace personalized medical advice. Every person’s cancer experience is unique, so it’s important to talk with your doctor or nurse about your specific situation. Use CIS as a helpful resource, but always rely on your healthcare team for decisions about your care.

Next Steps

If you or a loved one is facing cancer and you want trustworthy answers or support, consider contacting the Cancer Information Service. You can call 1-800-4-CANCER (1-800-422-6237) or use the live chat on the National Cancer Institute’s website. CIS staff are ready to help you find the information you need in a way that makes sense to you.