@irenea8, I expose my chest to a FDA approved red light panel (red light and infrared light) 3 times a week for a few minutes front and back. When I started using it, I felt it was really helping, I felt it made me turn a corner. Maybe it was placebo effect. Some physicians in Europe believe it will completely revolutionize medicine, others don't give it much credit. I use it cautiously. But again, we are all different. I cannot prove that it helped. Again, it could all be placebo. Or not. I don't use it for a long time. At first, I was using it for a little bit longer, now I just do 2 minutes front and 2 minutes back.
Best wishes of great health to all of us!