How to Improve Sleep Naturally: A Doctor's Evidence-Based Guide
How to Improve Sleep Naturally: A Doctor's Evidence-Based Guide
Poor sleep is one of the most damaging things you can do to your health — and one of the most common problems I see in practice. Chronic sleep deprivation is associated with increased risk of cardiovascular disease, obesity, type 2 diabetes, depression, and accelerated cognitive decline. Here's what actually works.
The Foundations First
No supplement will compensate for poor sleep hygiene. These behavioural foundations come first:
- Consistent sleep and wake times — even at weekends. Irregular sleep patterns disrupt your circadian rhythm
- Avoid screens for 60–90 minutes before bed — blue light suppresses melatonin production
- Keep your bedroom cool and dark — core body temperature needs to drop 1–2 degrees to initiate sleep
- Avoid alcohol within 3 hours of bed — alcohol disrupts REM sleep even if it helps you fall asleep initially
- Caffeine cut-off at 2pm — caffeine has a half-life of 5–6 hours
The Supplements With Real Evidence
Magnesium Glycinate — my top recommendation for sleep. Magnesium activates GABA receptors (the same receptors targeted by prescription sleep medications, but through a gentler natural pathway), reduces cortisol in the evening, and relaxes muscle tension. The glycine in magnesium glycinate adds its own sleep-supportive effects. Take 2 capsules 30–60 minutes before bed. Shop Magnesium Glycinate →
NMN — less obvious but genuinely effective. NMN supports circadian clock gene expression via SIRT1 and NAD+. Many people taking NMN for energy notice improved sleep as a secondary benefit. Take in the morning to align with natural NAD+ rhythms. Shop NMN Pure →
Ashwagandha — one of the most extensively researched adaptogens for sleep. Multiple trials have shown significant improvements in sleep onset time, recovery and overnight routine and morning alertness. Our Shilajit Complex includes ashwagandha as part of its adaptogenic stack.
What About Melatonin?
Melatonin is prescription-only in the UK (unlike the US where it's sold over-the-counter). It's most effective for circadian rhythm disruption — jet lag, shift work — rather than general insomnia. It helps you fall asleep at the right time but doesn't address the quality of sleep architecture the way magnesium does.
My Recommended Evening Protocol
2 capsules Magnesium Glycinate + 30 minutes of wind-down (reading, stretching, no screens) + consistent bedtime. That combination, practised consistently, produces meaningful sleep improvements within 1–2 weeks for most people.
Written by Dr Chun Tang, MBChB, MRCGP — founder of Little Ox and practising UK GP.