Low-dose A-bomb radiation lengthen lifespan and decreases cancer mortality — compared with un-irradiated individuals


Agreed, Jim. It is important for toxicologists and epidemiologists to realize that (very often, if not always): a small amount of a chemical — or in the case of this article, atom bomb radiation — can be beneficial; a larger dose will no longer be beneficial but still not toxic; and then a further increase in dose will be toxic and/or carcinogenic.

Examples that come to mind — off the top of my head — include carbon monoxide (CO), nitric oxide (NO), hydrogen sulfide (H2S), reactive oxygen species (ROS; O.), and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD; the lay term is ‘dioxin’). Each of the first four of these five “environmental signals” (in small amounts) are now realized/appreciated that they function as a signaling molecule in crticial life processes — such as neuromodulation in the brain, smooth muscle relaxation in the vascular system, gut motility, electrical conductance in the heart, etc.


This entry was posted in Center for Environmental Genetics. Bookmark the permalink.