Melatonin is not the sleep aid you think it is

Only a small dose of melatonin does anything measurable, and most supplements on the shelf contain far more than that. Today's three verdicts start there and go further.

TODAY'S TOPIC: Sleep

"Taking melatonin supplements helps you fall asleep faster and stay asleep longer."

Melatonin sits on nightstands across the country as the default fix. The research supports a narrower use than the marketing suggests.

Melatonin is genuinely effective for shifting your body clock, which helps with jet lag or an irregular schedule. For general insomnia in otherwise healthy adults, well-established research shows the effect on falling asleep faster is modest, often just several minutes.

Many over the counter supplements also contain doses far higher than what studies show is effective, sometimes ten times higher. More is not doing more here. It is just more melatonin than your body needs to get the job done.

"Waking up at exactly the same time every night, often around 3am, is caused by stress."

Stress gets blamed for this one immediately, and sometimes it plays a role. It is rarely the whole story for women in midlife.

Core body temperature and cortisol follow a natural rhythm that shifts during perimenopause and menopause, and cortisol often begins rising earlier in the early morning hours than it used to. That earlier rise can pull you out of sleep before your alarm, regardless of how your day went.

Research on sleep architecture during the menopause transition links this pattern to hormonal timing shifts, not just psychological stress. Stress can make it worse. It did not necessarily start it.

"A cooler bedroom improves sleep quality more than most other changes you can make."

This one is less flashy than a supplement, and it works better than most of them.

Core body temperature needs to drop for your body to initiate and maintain sleep, and a warm room works against that drop. This effect is more pronounced during perimenopause and menopause, when hot flashes and night sweats already push body temperature in the wrong direction.

A growing body of sleep research points to bedroom temperature as one of the more reliable, low effort levers for improving sleep quality. No app required for this one.

Your sleep is not falling apart from stress alone. Some of what wakes you up runs on a clock older than your calendar.