US folk tend to think height means a better nutritional intake, so
Chinese have 'shrunk' on rice.  Others think drinking milk made for
calves causes a growth spurt not properly human. It's all in
perspective.
   J I Rodale, founder of Organic Gardening magazine, thought any man
taller than 5'7 (1.67m) risked stroke with heart action pushing blood to
that height.  One should judge by overall health, not by centimeters.
By those standards, both Japanese and Cubans are doing better than US
folk, and Chinese probably are as well.