@jewles63 there are about 3 other discussions on red light therapy so I will tell you how to find them! At the top of this page, right above your photo are the words ‘autoimmune diseases’. Click on the words and it will take you to Autoimmune Diseases Support Group. Put your request, ‘red light therapy’, in the search box and click on it. Up will come a list of discussions and comments. Take your time and read through them and ask your questions where appropriate. Good luck! You will find lots of info!