What are the 10 early warning signs that could mean cancer?
A persistent cough, a sore that refuses to heal, unexplained weight loss and changing bladder habits.
They may seem innocuous, irritating facts of life.
But experts warn people not to dismiss them and six other key changes in the body, for fear they could be a sign of something far more sinister.
The 10 red flags for cancer are ingrained in the minds of doctors and healthcare workers the world over.
But on World Cancer Day, experts are reminding members of the public to familiarise themselves with the key symptoms, in a bid to save lives.
Currently 8.2 million people die from the disease across the world each year – 4.7 million men and 3.5 million women.
Of those, four million deaths are premature, those people aged 30 to 69 years old.
In many cases early diagnosis can mean the difference between life and death for cancer patients.