I was suffering from really bad allergies, and got started on flushing to get rid of them. I just saw an NAET specialist today (naet.com), and learned just how many allergies I had, and how I would continue to get toxic reactions to them even with little symptomatic response--case in point: I have allergies to calcium, Vitamin A, and iron among other things, and can get these eliminated. Regarldess of whether I have symptoms, I'll difficulty absorbing them because I'll still have allergies to them. I'm getting this handled now, and will still do the flushes...but for your own health get your allergies checked out regardless of how much they've decreased with each cleanse you've done.