Onko melatoniini "hyvä" vai "huono"?

This Finnish blog post examines melatonin as both a natural hormone and a supplement, contrasting arguments for improved sleep hygiene and light exposure with claims about therapeutic high-dose use. It cites practitioners, books, product links, and research snippets about melatonin quality, bioavailability, retinal effects, mitochondrial function, and circadian biology. The piece ultimately emphasizes natural light by day, darkness at night, and caution around oral melatonin supplementation.