@Roadkill This is false. Life expectancy from birth was low, at around 30 years for prehistoric humans, due to high mortality rates in children. It was not due to senescence, and has nothing to do with their DNA.
^
The author(s) is similarly useful information as the scanlation group, especially for people who are familiar with many mangaka, or are looking for manga of a particular style.
*Edit: Regarding TMI on the front page, I do kind of agree; info like author and scanlation group might be better...