Very sane, Jeri.

The links in the post before yours (again, posted entirely without comment) express doubts about the usefulness of probiotics (and point out that they are a tens-of-billions industry) and strikingly indicate that "prebiotics" (another great word coined in order to get you to think that you have to spend money on exotic stuff) are cheerfully available from common foodstuffs, supplements not needed. It all comes down, as far as I can see, to just being sensible about the balance of foods we eat. Watch your weight, watch the calories (by weighing yourself) and eat a good variety of stuff including goodly amounts of vegetables. And be happy and enjoy life.