A reverse trend in height???

It could happen if food continues to be in short supply in Japan. In recent decades the Japanese have had an impressive increase in average height, with the plentiful protein supply. But even with its comparative wealth this country has troubles competing for the total food supply with a growing Chinese population and stiffer competition from all the surrounding countries.
Australia, a major food exporter has suffered serious drought, further adding to the supply problem.
One major tragedy of note is that Kirin had to jack up the price of beer for the first time in nearly 2 decades, due to the barley crunch.
Major bummer.