Japan has a sex problem. The country's birthrate is shrinking year after year, to the point where deaths are outpacing births.

Simply put, Japan's population is decreasing.

World Bank

But let's be clear: Population change is a complicated subject affected by many factors.

Western media often correlates the decline in Japan's population size with recent studies of Japanese sexual habits and marriage. A 2016 study by the National Institute of Population and Social Security Research in Japan, for instance, found that "almost 70 percent of unmarried men and 60 percent of unmarried women are not in a relationship."