I love my lamp so much. I got it to help me with my immune system and cancer BUT OMG! It worked on my autonomic nervous system so well that it was shocking! I was so impressed! I am a practitioner of a method for reducing PTSD symptoms in people. Have been for many years. Am always looking for ways to help people restore their "fight or flight" to its optimal settings (turning off when there is no threat present). As soon as I sat down under my lamp, I had an immediate "clearing" of some past trauma, that I recognized because of my training. I was in awe. This went on for nearly 20 minutes while I just observed. Afterward I went and looked up PTSD & Infrared light and found the studies. Whoa. This lamp has the right amount of power to induce calming effects when used regularly. BTW, I was introduced to this exact lamp when I would go do treatments for cancer. While sitting there with the IV bag, I could feel very relaxed and warmed. I knew my body was craving it enough for me to buy my own. It was not untl I was in the comfort and safety of my own home, with only family around, that I experienced the deepest level of relief. I do think environment will matter, however it's amazing to think that light is capable of inducing powerful healing states! Highly recommend. Finally, my lamp came with all the parts. A friend and I put it together in 4 minutes, once everything was unboxed. It was nice to have a second set of hands but I could have done it by myself. We did use a set of plyers for the piece that connects the base to the pole, Not sure it was necessary but it did help to get things very, very tight. I would buy again. Am saving up to get one for my parents who are elderly. They need this!!!