As far as I'm aware, the vast majority of radiation we experience comes from the sun in some form. You do know that the sun produces not just visible light but electromagnetic radiation on other wavelengths too. Not to mention nuclear radiation of various types.Kumar said:Zep, thanks. Can it be true with other rays/radiations than Sun rays? I mean, is it possible that our body can get some beneficial effects from other rays/radiations than the Sun Rays(directly or indirectly)? Indirectly, it may mean that the tissue damage(may be only weak tissues) can be a beneficial effect .
Just checking...
Kumar, you do understand what "electromagnetic radiation" is? Radio, X-rays, UV, infra-red, etc, as well as visible light? What it is NOT is "cosmic rays", alpha, beta and gamma radiation, etc, which also come from the sun but in varying amounts depending on many factors.
OK, back on subject: In a personal answer to your question, anything that produces tissue damage in your body is probably not good for you long term. Although the human body normally has good recuperative powers of its own, this is not an unbreakable process and it can be beaten any number of ways (i.e. you can be seriously damaged or even killed).