Around one in eight women will statistically develop breast cancer at some point in her life.
Two in five breast cancers are diagnosed after a woman notices a lump, however, research suggests up to half do not check themselves regularly.
In the UK, mammograms are only carried out on the NHS between 50 and 70, making self-exams all the more important for other age groups.
Women should look out for any signs of swelling, dimpling or puckering of the skin.
Nipples that are cracked, sore, inverted or ‘inside out’ may also be a sign of breast cancer.
Using the ‘pads’ of the three middle fingers on the opposite hand, a woman should also press the entire breast, checking for any lumps.
Early breast cancer can also cause blood-stained discharge from the nipples.
If you find a lump, contact a GP as soon as possible.
Remember, nine out of 10 cases turn out to be non-cancerous.