By Ryan Merrifield Exposure to UV rays, either from the sun or sunbeds, is the biggest cause of all skin cancer \- and there’s one change you need to look out for that is often overlooked. Those with a family history of skin cancer are also at higher risk. Knowing your body and checking for any unusual changes is key when it comes to spotting melanoma early. Melanoma skin cancer is the fifth most common cancer in the UK with around 16,000 new cases diagnosed each year. Experts warn that around one in four skin cancer cases are diagnosed among people aged under 50, which is unusually young comp…