When we act like responsible adults, we always look at the expiration dates on the containers of prescription medicine and over-the-counter drugs that we use. Just to give one example, I can't count the number of times that I have tossed old aspirin tablets.

Now, it turns out, I was throwing away my money.

From now on I will be saving money after reading an article in the current issue of my favorite health newsletter, which I subscribe to the old-fashioned way, on paper. The article, "Out on a...