The goal of the clinical trial is to learn if Hormone Replacement Therapy (HRT) and Cognitive Behavioral Therapy (CBT-I) can treat insomnia in menopausal women. The main questions it aims to answer are:
* Are HRT and CBT-I effective in reducing insomnia in menopausal women?
* Are HRT and CBT-I comparable in terms of reducing insomnia severity in this population?
Researchers will compare HRT and CBT-I to an active control group, receiving sleep hygiene instructions.
Participants will:
* Complete a screening and baseline assessment
* Receive Hormone Replacement Therapy (as prescribed), Cognitive Behavioral Therapy (1/week), or sleep hygiene instructions (1/week) for 8 weeks.
* Keep a daily diary (sleep e-diary), to assess sleep-quality.
* Wear an electroencephalogram (EEG) during 6 nights (3 at baseline \& 3 post-intervention), to assess deep sleep cycles and waking episodes.
* Receive a phone call for intervention compliance
* Complete a post-intervention assessment.