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106 Fernandes, J

The pineal gland is the main but not the only source of melatonin in the body
Compr Physiol 10:12411275 Ribot B, Aupy J, Vidailhet M, Mazre J, Pisani A, Bezard E et al (2019) Dystonia and dopamine: from phenomenology to pathophysiology

J Heart Lung Transplant (2016) 35:102430

They provide the building blocks of collagen and encourage the skin to produce it

Peptides may be lower-risk in some situations because they often stimulate natural hormone pathways rather than directly replacing hormones
