Sometimes people with cancer don't want to talk about it.
But you can help by knowing the facts and asking professionals for tips on how you can support someone with cancer.
The important thing is to let the person who has cancer know that you are there if they do want to talk.
The groups will also help you understand what's happening if you have cancer too.
Every day 10 children and young people are told they have cancer. CLIC Sargent is there from the point of diagnosis and helps the whole family cope with the impact of cancer, its treatment, and life after cancer. The charity provides emotional support and practical information to anyone affected by childhood cancer. For more information you can visit their website or call 0800 197 0068.
Macmillan Cancer Support
Macmillan Cancer Support is a charity that provides practical, medical, emotional and financial support to people of all ages with all types of cancer, whenever they need help. If you have any questions about cancer or just want someone to talk to, call Macmillan on 0808 808 0000.
The riprap website is developed especially for older children and teenagers who have a parent with cancer. In riprap, you can learn more about cancer and its treatment, read real stories about how this might affect you and your family, and use the discussion forum and ask for advice.
ChildLine is the UK's free, 24 hour confidential helpline for children and young people who need to talk. Trained counsellors are there to provide comfort, support and advice about any problem that's on their minds. Contact ChildLine 24 hours a day, seven days a week, by phone on 0800 1111 or via their website. Calls are free from all existing networks, both landline and mobile.
Cruse Bereavement Care
Cruse Bereavement Care exists to promote the wellbeing of bereaved people and to enable anyone who has experienced bereavement to understand their grief and cope with their loss. They can be contacted on 0844 477 9400 from Monday to Friday, between 9.30am and 5.00pm. If you're in Northern Ireland, call 02890 792 419.
For more information you can visit the child-friendly websites Teen Info on Cancer, CancerHelp and Captain Chemo, by clicking on the other links on the right.