Padded bras for kindergarteners [3] with growing breasts to make them more comfortable? Sixteen percent of U.S. girls experiencing breast development by the age [4] of 7? Thirty percent by the age of 8? Clearly something is affecting the hormones of U.S. girls—a phenomenon also seen in other developed countries. Girls in poorer countries seem to be spared—until they move [5] to developed countries. No scientists dispute that precocious …