According to the World Health Organization, cancer death accounts for roughly 10 million fatalities in 2020. Cancer is a disease where abnormal cells replicate in one place of the body. As a result, cancerous cells can penetrate and kill healthy tissue, including organs. During stage IV cancer, cancer spreads from one body region to another, known as metastasis. Let's explore the most common types of cancer in the UK, what can cause cancer and cancer treatment options.