The same principle of hormesis applies to organic arsenic and many others natural to our diet toxins. Some of the phytochemicals are toxins and anti-nutrients t

The same principle of hormesis applies to organic arsenic and many others natural to our diet toxins. Some of the phytochemicals are toxins and anti-nutrients the plans use to fend off herbivores, but could be beneficial to us in the right amounts during the rate state. Our retina has receptors for blue light, which get triggered even when your eyelids are shut. So, do you think blue light is not interesting to our body? Don't you think without bright light your eyesight can develop properly? This is not much different than the hygiene hypothesis - something could be beneficial in the way that we're programmed to expect it, and when we don't get it, our primed defenses actually hurt us. With time, we will adapt to be fine without blue light during the day, without UV, but so far, it seems that we need it for proper development!