"hamsters exposed to red light at night had significantly...

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Re: "hamsters exposed to red light at night had significantl

I find the topic title misleading.
This study doesn't seem to be in line with Ray Peat views.

"In nearly every measure we had, hamsters exposed to blue light were the worst off, followed by those exposed to white light. While total darkness was best, red light was not nearly as bad as the other wavelengths we studied."

So, in other words, complete darkness at night is best according to this study. That red light is not so bad at night may be explained that red light doesn't inhibit melatonin production. I don't understand Ray Peat's views about melatonin. The only way to make sure you don't produce melatonin at night is by exposure of blue light, not by exposure of red light.

Many studies showed that melatonin might decrease the estrogen level, and vice versa, while it increases the level of progesterone. Other group of workers , illustrated that
deficient pineal melatonin function in early pregnancy may be causally related to the development of spontaneous abortions. Ram et al. has reported that melatonin blocked the mitogenic actions of estradiol in MCF-breast cancer cells. Also, Rato et al. has shown that melatonin blocked the activation of estrogen receptors for DNA binding sites in MCF and breast cancer cells.
....
Moreover, our data showed that melatonin has markedly
decreased the number of uterine estrogen receptors with concomitant
increase in the number of progesterone receptors.
These findings, in addition to previous ones that showed
that melatonin decreased estrogen levels [6,31], may explain
the inhibitory effect of melatonin on uterine contractility.
These, also, may help to explain the antiestrogen effect of
melatonin, since melatonin was defined as natural tamoxifen
based on the mutual inhibitory effect on the rate of synthesis
of both estrogen and melatonin [7].

http://www.sciencedirect.com/science/ar ... 1803000148