A slightly burnt sausage on the barbecue may not be that tasty anymore, but it certainly can't hurt. However, such a sausage is not as innocent as you think. Toxins are released when they turn black; the same happens with burnt potatoes. But that is not the case with vegetables. Nynke Kramer, toxicologist from Wageningen University, explains why and what is so dangerous about burnt food.

00:00 Is burnt food bad for you?
00:25 What happens with burnt meat?
01:22 What happens with burnt potatoes?
02:04 Are burnt vegetables bad for you?
03:15 The higher the dose of toxic substance, the greater the risk of cancer
03:41 How do toxins form?