The investigators found that, "in spite of the huge gains in human longevity over the past century, the male-female difference has not shrunk," said Susan Alberts, a professor of biology at Duke University and a co-author of the new study. The researchers did find that the the amount by which women outlived men varied across populations. For instance, the largest male-female difference in life span among the populations studied was in modern-day Russia, where the gap is approximately 10 years.
