Far Infrared Radiation is a popular therapy that has been used widely in fat loss, skin disorders, and detoxification for it can penetrates into the skin & muscles to creates the heating to expand capillaries to increase blood circulation / flow.
Also, some people are using this therapy to treat erectile dysfunction. The penis erection is all about blood flow to the penis. When no enough blood flow to the penis to cause and maintain the erection, the erectile dysfunction occurs. Now when you know far infrared raditation can improve your blood flow to the penis, will you try it to treat your ED problem?
There is a study of “Energy Specific Far Infrared Radiation Treatment for Erectile Dysfunction” in Canada sponsored by GAAD Medical Research Institute Inc. (see https://clinicaltrials.gov/ct2/show/NCT00573209). But the result of this study is still unknown because the information has not been verified recently.
I think the far infrared radiation is not sure to cure erectile dysfunction for the reasons that cause ED vary and are complicated. But it can very possible improve and enhance the erection quality by FIR raying the prostate area,perineum and penis-erection-related areas.