> [Are panic attacks mainly a manifestation of hormonal imbalance, excessive stress hormones?] Yes, usually with hyperventilation caused by high estrogen and [[serotonin]], low vitamin B6. [(Reference)](https://archive.ph/o/OJZkW/https://raypeatforum.com/community/threads/ray-peat-email-advice-depository.1035/page-7%23post-40076)