A health expert has explained why so many women over 40 wake up at 3.30am, after a study found that nine out of ten female participants over that age wake at least once before 7am. Dr Oscar Duke appeared on the BBC's Morning Live to discuss the findings, which showed 3.30am and 16 seconds to be the most common waking time.
Study findings on night waking
The research, commissioned by mattress company Simba Sleep, polled 1,000 UK women aged 40 and over. It found that 84% regularly wake during the night, with 78% waking between 1am and 4am. Nine in ten (92%) wake at least once before 7am, and once awake, they lose an average of 33 minutes and 55 seconds trying to get back to sleep. For 27%, the struggle lasts at least 45 minutes.
For 85% of participants, the wake-up call is needing to go to the toilet. Other common causes include overheating or night sweats (47%), hunger (13%), and a racing mind about the next day (58%).
Dr Oscar's explanations
Dr Oscar told viewers that there are many reasons people wake at night. "Particularly thinking about women in the time of the menopause and the perimenopause, those decreasing hormone levels certainly seem to be associated with poor sleep and insomnia type problems," he said.
He also pointed to sleep cycles: "If you get into bed around 11pm or 10.30pm that might mean that 3.30am is the time that you then wake up as a result of those cycles." Other factors include urinary problems, pain, and mental health conditions such as depression, which is commonly linked to early morning waking.
Importance of quality sleep
Getting enough sleep is fundamental to overall health, brain function, and emotional balance. During rest, the brain moves short-term memories into long-term memory and clears waste products built up during the day, helping with focus and problem-solving. Physically, sleep allows the body to repair tissues, regulate hormones, and support the immune system.
Health authorities like the Centers for Disease Control and Prevention (CDC) recommend seven to nine hours of quality sleep each night to protect against chronic conditions such as heart disease, diabetes, anxiety, and depression.
