New research suggests that a daily helping of cheese could increase the risk of bladder cancer. Eating more than 53g - roughly the same size as a small chocolate bar - raises the chance of the disease by 50 per cent.

On the other hand, a daily portion of olive oil, can more than halve the risk of getting the disease. Researchers set out to discover if saturated fats, such as those found in meat and dairy products, made cancer more likely and healthier fats, such as olive oil, offered some protection.