Apple Watch sleep data helps Harvard researchers study menopause transition

Harvard researchers analyzed 94,000+ nights of Apple Watch sleep data from 338 Apple Women’s Health Study participants.

They found more wakefulness during sleep around the final menstrual period, with large differences between individuals.

Worse sleep was also linked to symptoms such as bladder issues, joint pain, heart discomfort, and depression.

The findings highlight how Apple Watch sleep tracking can help study perimenopause at scale and inform sleep hygiene guidance.