not true...however the population has exploded recently...
"Estimates for the number of people who have died since the pyramids were built (i.e., about 5,000 years ago) are around 6 billion, which is fairly close to the current world population. But if we consider modern humans to have emerged around 40,000 to 45,000 years ago, estimates about the number of dead in human history vary widely...However, most demographers peg the number of dead at approximately 60 billion"
source:
http://www.snopes.com/science/stats/dead.htm