Blood in your wee
If you notice your pee is darker than usual or reddish in colour, you could have kidney cancer.
The term for this is haematuria, and it is the most common symptom of kidney cancer.
According to Cancer Research UK, this could be caused by an infection or enlargement of the prostate or kidney stones, so it’s important to see your GP if you notice any blood in your urine.
The official advice adds: “The blood does not have to be there all the time. It can come and go.
“Sometimes, the blood cannot be seen by the naked eye but can be picked up by a simple urine test.
“As the bleeding can come and go, you or your doctor may think that the problem has gone away.
“This can mean that an early, treatable cancer in the kidney or bladder is allowed to grow to a stage where it may be more difficult to treat.”