In the last of the series investigating the truth behind the latest health reports, Angela Rippon teams up with some boxers to test some worrying claims about paracetamol - and discovers what is really the best way to knock out a headache. Meanwhile, Kevin Duala investigates the mistakes we all make in the sun to find out why skin cancer is at an all-time high, and Steve Brown finds out the truth behind terrifying warnings that the everyday products in our bathroom cabinets could be harbouring some dangerous chemicals.