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Published on: 7/21/2026

How do hormonal changes affect sleep?

Hormonal fluctuations during the menstrual cycle, pregnancy, and perimenopause can significantly disrupt sleep. Shifts in estrogen and progesterone levels often trigger insomnia, night sweats, and frequent awakenings, making it harder to fall asleep or stay asleep throughout the night.

If poor sleep is affecting your daily life, don't guess at the cause. Understanding whether hormones, stress, or an underlying condition is behind your symptoms is the first step toward relief. Take a free, instant, online symptom check to get personalized insights and clear guidance on your next steps.

Reviewed for medical accuracy: 07/20/2026

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Explanation

Hormonal changes in the body can have a significant impact on sleep. During the menstrual cycle, hormones like estrogen and progesterone fluctuate, which can affect sleep quality and duration. Some women may find it harder to sleep well right before their period starts.

In perimenopause, the time before menopause, hormonal levels change a lot, which can also affect sleep. Some women may experience night sweats, which can wake them up at night. Others might have trouble falling asleep or staying asleep.

Key Points:

  • Menstrual Cycle: Hormones change throughout the cycle, leading to possible sleep problems, especially before menstruation.
  • Perimenopause: Changes in hormones can lead to sleep disturbances like night sweats and insomnia.

Understanding these changes can help in finding ways to improve sleep, such as maintaining a regular sleep schedule and creating a comfortable sleep environment. If sleep problems persist, you can use a free symptom checker to better understand your symptoms before talking to a healthcare provider.

(References)

  • Troìa L, Garassino M, Volpicelli AI, Fornara A, Libretti A, Surico D, & Remorgida V. (2025). Sleep Disturbance and Perimenopause: A Narrative Review. Journal of clinical medicine, 40094961.

  • Rugvedh P, Gundreddy P, & Wandile B. (2023). The Menstrual Cycle's Influence on Sleep Duration and .... Cureus, 38022155.

  • Baker FC, & Lee KA. (2022). Menstrual Cycle Effects on Sleep. Sleep medicine clinics, 35659080.

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