Avg height is not declining for caucasian males. America has a large number of Mexicans and central american men that are BELOW 165 cm
Avg height for an under 25 caucasian male in America is around 180. over 5'10. UK avg is shorter
to the other person that said only ratios matter, no, you are wrong. Absolute numbers matter because people in general and tall people specifically are not distributed evenly throughout the country
if you want to live in a major city such as los angeles or new york you will be competing against the elite not the avg. Total numbers matter in this context
Since America has a much larger number of super tall people and because they are concentrated in major cities you will feel much less avg living in a major American city.
Easier to be 176 in London than it is to be 176 in New York, and actually it's partly due to the subsidies provided by the UK govt
NYC is basically for only the wealthy now, not the poor or middle class. London on the other hand is for the wealthy, and definitely not for the middle class, but the poor can live in London as housing assistance is much more generous there
TBIKE, around 180, maybe a tad less. This would be the median for caucasian males across the nation, though I suspect higher in upper class areas such as Manhattan or Silicon Valley
British youth are probably taller because America has worse social programs and the average for British white kids (fully grown) might be closer to 6' than it is to my height (5' but it is no way 6'.
Maybe 5'11 max.
Anyway average height is supposed to be in decline in America.
Plus.. what you just said makes no sense. Average height in America and Italy is very similar for young white people (within a range of like 1.5 cm as far as I remember).
Given the way averages are calculated, it wouldn't make sense that there are much less super tall people in Italy.