Recently, i've noticed that my boyfriend
seems relatively shorter than he used to
be about a year ago, and we found out that
he has gone from being 6'2" to 5'11"!

I was wondering if
it's possible that osteoporosis could
occur in teenagers (he is 19 years old),
and what might cause it. A theory of my
mom's is that he drinks too much pop
(about 3-4 cans a day) and that it can
result in the loss of bone density, but
i'm not sure whether that could be
possible. Any help would be much
appreciated!