Testosterone levels show steady decrease among young US men
Do enough look ups on Google Trends, and you'll see that the areas that surround the Mississippi river (and inflow rivers) are often correlated with all sorts of medical diseases searches. For example, here's one for testosterone:<p><a href="https://trends.google.com/trends/explore?date=all&geo=US&q=low%20testosterone%20men" rel="nofollow">https://trends.google.com/trends/explore?date=all&geo=US&q=l...</a>