At the age of 34, before IPL, I was enjoying a healthy, active lifestyle. I jogged several times a week, lifted weights, did yoga, and still had ample energy to raise a young child. Yes, I got the occasional flu/cold like everyone else, but apart from that, things were amazing for me healthwise. After IPL, what a change. I can't even begin to tell you. I now have so many problems. Severe chronic fatigue, hormonal imbalance, acne, hair loss, facial fat loss, accelerated aging, digestive problems... Now, some do theorize that some type of immune issue or virus that was dormant could have been triggered by the procedure. It's possible, yes. It's also possible for these machines to damage your glands and I believe that they do damage very important glands. Light energy can travel through tissue so therefore it can penetrate and alter tissues. (The whole point of these devices is to alter the tissue in some way.) I believe this has happened to many of us. I am not a scientist nor a doctor, so what I'm saying here is not necessarily backed by a bunch of studies and so forth that I've done, but based on what happened to me and the others, yeah, the procedure made us sick, for sure. Not the stress. I wasn't stressed until after I started feeling fatigued, until after I started seeing the fat loss in my face. The illness had begun to set in before I knew what had happened.