This is the 10753rd most frequent Portuguese word.
hormônios
Hormônios: Hormones; chemical substances produced in the body that regulate various physiological processes and functions.
Here, 'hormônios' is used as the subject noun referring to biological substances essential for bodily regulation.
Os hormônios regulam diversas funções do corpo humano.
Hormones regulate various functions of the human body.
In this sentence, 'hormônios' is the noun indicating these biological compounds whose variations relate to mood changes.
Alterações nos hormônios podem causar mudanças de humor.
Changes in hormones can cause mood swings.
Here, 'hormônios' is referenced as a noun within the phrase 'níveis de hormônios', discussing their quantities in the body affected by medication.