Why can't I sleep anymore?

The night that changed without asking you

You used to sleep. Not perfectly, but normally: asleep when your head hit the pillow, awake when the alarm went. Somewhere in the last couple of years that quietly broke, and the breaking has a shape almost every woman recognises: asleep fine, wide awake at 3am, mind racing through lists and worries that look absurd by daylight, then the alarm arriving like an insult.

If that's your night, this page is for you, and the first thing to hear is: it's not your discipline, your screens, or your age catching up with you. Something physiological has changed.

What actually changes

Oestrogen and progesterone both influence the systems that run your nights. As they shift and fluctuate through perimenopause, three things happen at once: temperature regulation gets twitchy (the night heat and the duvet hokey-cokey), the stress system runs hotter (that 3am mind isn't anxiety arriving from nowhere, it's cortisol rising earlier and harder than it used to), and sleep architecture lightens, so the same disturbance that once washed over you now wakes you fully.

Knowing this matters because it changes the goal. You're not trying to "fix your sleep hygiene" like a student. You're working with a more reactive system that needs steadier inputs.

What helps, honestly ranked

The heavy lifters: a fixed wake time (yes, even after a bad night: it's the anchor everything else hangs off), morning daylight within an hour of waking, and a genuinely cool room with layers rather than one heavy duvet.

The meaningful supporters: alcohol as an exception (it's the single most reliable second-half-of-the-night wrecker), caffeine finished by early afternoon, and a wind-down that starts before you're exhausted, not after.

The honest asterisks: magnesium is the nutrient most associated with the nervous system, and it contributes to normal functioning of the nervous system and to the reduction of tiredness and fatigue. It's in Bloomelle at a meaningful dose, in absorbable forms. It is not a sleeping tablet, and neither is anything else honest.

When to take it to your GP

If broken nights are bleeding into your days for more than a few weeks, that's a conversation worth having, and worth having well. Take two weeks of notes with you: our symptom diary builder makes one you can print in a minute. Snoring that stops and starts, or gasping awake, deserves mention too: sleep apnoea rises in midlife and is very treatable.

Sources and further reading: NHS: Menopause · NICE NG23 · Women's Health Concern. General information, not medical advice. If your symptoms concern you, speak to your GP.