[Sea Ray]

Originally Posted by Kingspoint

It has been reported that the elderly require a 2- to 3-fold higher concentration of salt in order to detect it in tomato soup (Stevens et al., 1991).

http://chemse.oxfordjournals.org/content/25/3/331.full

We could start a thread on the definition of elderly. That article defines it as being 59 or older...