Cancer is far more common today than at any time in history, according to a study of 3,000 human skeletons in a Croatian archaeological collection.

The researchers argue that cancer is more common today because people now have much longer life spans than they did just a few centuries ago. In Croatia, for example, the current average life expectancy is around 74 years. But the average age of death found in the archaeological remains that researchers studied was just 36 years.

Fair enough. But adjusting for life expectancy should be straightforward enough. There is more than one way to do it. I wonder how the comparison comes out then.