I read this and got worried as much as the questioner. But something struck my consciousness when I read the following "The obvious answer is that African leaders are just older than those of other continents, an explanation Simon Allison favours. He believes Africans like their leaders to be older - respect for elders is embedded in the culture of many of the continent's countries.
But are they?

"African presidents, before they have been elected, will have led a relatively disadvantaged life, and disadvantageous lifestyle, and that will impact on their life expectancies at subsequent ages," he says.
"So once they get into the presidential office, even though they will be living a lifestyle far far far removed from their fellow citizens, which would increase their life expectancy in relation to those fellow citizens, they do have an accumulated disadvantageous lifestyle which they have to pay back on at some time."
Although of course, not all African leaders will have had poor childhoods."
http://www..com/talk/topic,130783.0.html

Whats your take on this, considering the common saying that Africans have a lower life span complicated by neglect and deprivation caused by its leadership partly, such that when the follower eventually becomes the leader much harm must have been done. This of course is to divorce the fundamental cause of death which is human imperfection from inherited sin.