News media have paid a lot of attention to the growing obesity epidemic among children all over the developed world, but recent studies point to a number of other somber health trends. Perhaps most serious was a report that the United States has stalled in its efforts to reduce infant mortality. The report, released last week by the National Center for Health Statistics, analyzed about 95 percent of birth records in the nation and found the United States has about seven infant deaths per 1,000 live births — roughly the same number it had in 2000. The report found Japan, Sweden, Britain, Spain, France, Germany, Australia and more than a dozen other countries all had infant mortality rates of fewer than five deaths per 1,000 births, according to Bloomberg News. Although the report found a small drop in the number of infant deaths in 2005 and 2006, the United States now ranks 29th in the list of nations with the lowest infant mortality rates — tied with Poland and Slovakia.