According to the NHS, more than one in three people will develop some form of cancer during their lifetime.
In the UK, the four most common types are breast cancer, lung cancer, prostate cancer and bowel cancer.
Symptoms will vary between the different types, so it’s important to be aware of any unexplained changes to your body, which could signify the disease.
There are a whole host of symptoms of cancer – these are six of the main signs.
A lump in your breast, armpit, testicles or elsewhere on your body that is rapidly increasing in size.
Most lumps are harmless, but should always be examined by a doctor just in case, as some can be related to cancers such as breast cancer and testicular cancer.
Coughing, chest pain and breathlessness
The NHS advises seeing a GP if you have a cough that lasts for more than three weeks.
While it’s more likely to be a sign of something less serious, a persistent cough can sometimes be a symptom of lung cancer or other serious conditions like pneumonia.
Changes in bowel habits
This can include blood in the stools, diarrhoea or constipation for no obvious reason and a feeling of not having fully emptied your bowels after going to the toilet.
These may also be accompanied by pain in the abdomen or anus and persistent bloating.
The NHS advises seeing a doctor if symptoms like these last more than a few weeks, as in some cases they could be a sign of bowel cancer.
Unexplained bleeding which appears in urine, stools, or vomit, or occurs between periods or while coughing should always be investigated by a GP.
Bleeding in these instances could be a sign of many types of cancer, including cancer of the kidneys, bowel, oesophagus, stomach, cervix or lungs.
See a GP if you notice any changes in shape or size to existing moles, or if new ones appear that keep growing, as they could be a sign of skin cancer.
Moles with an irregular or asymmetrical shape, or an irregular border with jagged edges, and that are more than one colour, bigger than 7mm in diameter, or are itchy, crusty or bleeding should always be examined.
Unexplained weight loss
If you have lost a lot of weight over the last couple of months that can’t be explained by diet changes, exercise or stress, see a doctor.
Unexplained weight loss could be caused by a number of things, but in some cases could be a sign of various different cancers.
“It’s important to be aware of any unexplained changes to your body, such as the sudden appearance of a lump, blood in your urine, or a change to your usual bowel habits,” said the NHS.
“These symptoms are often caused by other, non-cancerous illnesses, but it’s important to see your GP so they can investigate.”