Currently when you search for members by age, the "Back" button appears to be broken, because a box pops up asking if you want to resubmit the information necessary to display the search page. This is a usability problem we're working on fixing.

A simple workaround for now is to CTRL-click on every profile you want to view. That opens each profile in a new tab, and leaves the search results open in their own tab. That way you don't have to use the "Back" button.