Pineal Gland Secrets
The pineal gland may have a role in DMT production by way of nightly copper transport, which could allow INMT, the enzyme which creates DMT, to produce more of it, because copper-glutathione complexes inhibit DMT production.
https://imgur.com/4aI4Mup
http://www.jneurosci.org/content/19/3/1018.short
https://www.sciencedirect.com/science/article/pii/0091305776903440
https://www.sciencedirect.com/science/article/abs/pii/0024320577902326