Tryptophan: Foods, Sleep, Mood, Supplements and Safety (UK Guide)

Tryptophan is an essential amino acid your body uses to make serotonin, melatonin and niacin. You get it from protein foods such as chicken, turkey, fish, eggs, cheese, tofu, oats and seeds, and most adults eat plenty.

SAD Lamps: Do They Work, How to Use One and How to Choose (UK)

A SAD lamp, or light box, gives out bright, UV-free light (usually 10,000 lux) to imitate daylight on dark winter mornings.

5-HTP: Benefits, Side Effects, Dosage and Safety (UK Guide)

5-HTP (5-hydroxytryptophan) is a compound your body makes from tryptophan and turns into serotonin, then melatonin. Supplements are extracted from Griffonia seeds.

Kiwi for Sleep: Does Eating Kiwi Before Bed Help? What the Studies Show (UK)

Eating two kiwis about an hour before bed may help you fall asleep a little faster and sleep slightly longer, but the evidence is thin. The best-known study had just 24 adults and no comparison group.

Decision Fatigue: Signs, Why It Happens and How to Beat It (UK)

Decision fatigue is the drained, foggy feeling that comes after making lots of choices, when even small decisions start to feel hard. You may put things off, snap, or grab whatever is easiest.

Dust Mite Allergy: Symptoms, Why It’s Worse at Night and How to Reduce Dust Mites (UK)

Dust mite allergy is a reaction to droppings from tiny mites that live in bedding, mattresses, carpets and soft furnishings.

Happy Hormones: What They Are and How to Boost Them Naturally (UK)

The four “happy hormones” are dopamine (reward and motivation), serotonin (mood, sleep and appetite), oxytocin (bonding and trust) and endorphins (natural pain relief).

Mouth Breathing at Night: Causes, Effects and How to Stop It (UK)

Mouth breathing at night usually happens because your nose is blocked (a cold, allergies, polyps, a narrow nasal passage or big adenoids) or because your mouth falls open when you sleep on your back.

Magnesium and Calcium: Should You Take Them Together? Ratio, Timing and Safety (UK)

Yes, you can take magnesium and calcium together, and many bone supplements combine them. Large doses taken at the same moment may compete for absorption, so some people split them across the day.

Tired but Wired: Why You Can’t Switch Off at Night and How to Fix It (UK)

Tired but wired is when you feel exhausted but your mind or body won’t settle at night, usually because stress, late screens, caffeine or a shifted body clock keep you alert when you should be winding down.

Fight or Flight Response: What It Is, Symptoms and How to Calm It (UK)

Fight or flight is your body’s automatic stress response. Adrenaline and cortisol speed up your heart and breathing and send blood to your muscles so you can act fast.

Best Temperature for Sleep (UK): Ideal Bedroom Temperature, Heating and Bedding

The best temperature for sleep for most adults is a cool bedroom of around 16 to 18°C, with breathable bedding you can add to or kick off.