My understanding is that we should take probiotics every day. My question is how long should we take them for, is this something we should do for life?

There is nothing you need to take "for life" -- however, the premise behind this probiotic is that it delivers a vital nutrient (SBO's) that was traditionally part of our diet and lifestyle, but is no longer consumed much by humans. Kimberly has been taking it for nearly 2 years and feels it helps keep her health optimal, however, its possible to just take the product for 3-6 months in order to "balance" your intestinal system and then ease off it. It depends on your goals, budget and more.