Melatonin is a well-recognized endogenous hormone involved in the control of brain functions and maintenance of blood-brain barrier integrity.

All I can say is that if you're not taking melatonin, you're not doing the best you can at self-care.   

Anyone wondering what else it can protect us from? Hmmm?
Melatonin is a well-recognized endogenous hormone involved in the control of brain functions and maintenance of blood-brain barrier integrity.   https://t.co/JO7dANsSCs

— DCGreenZone1 (@DCGreenZone) October 5, 2022

Remember that in the low dosage is where Melatonin provides some decent sleep inducement.  For me, it keeps me asleep through the night and gives me some of the best dreams.  Meaning that they're always smooth and lead on from one event to the next without any perilous events that startle and wake me.  So I like that.  In higher doses, say, 40-100mg or more is where melatonin's neuroprotective activities kick in.