Medical researchers have developed a new blood test that can detect five different types of cancer at early stages. The test identifies specific proteins that tumours release into the bloodstream. In clinical trials, the test correctly identified cancer in 85% of patients who were later confirmed to have the disease. Early detection is crucial for cancer survival, as treatment is far more effective when the disease is caught early. Health authorities are considering introducing the test as part of routine annual health screenings for all adults over 50. This programme could save thousands of lives by catching cancers before symptoms appear, when they are most treatable.