Mood is not just emotional — it is biological. Hormones, sleep quality and blood sugar stability all influence how resilient or sensitive you feel.

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What this feels like in real life

• Crying more easily before your period

• Feeling anxious without a clear reason

• Becoming more self‑critical or withdrawnOestrogen supports serotonin and dopamine, helping stabilise mood (NIMH, 2022: https://www.nimh.nih.gov).

 

Hormonal drops, sleep disruption and blood sugar swings can all intensify emotional responses (Sleep, 2018: https://academic.oup.com/sleep).