Last updated: October 2026
The four “happy hormones” are dopamine (reward and motivation), serotonin (mood, sleep and appetite), oxytocin (bonding and trust) and endorphins (natural pain relief). You can’t top them up like a fuel gauge, but daylight, regular exercise, good sleep, laughter, touch and time with people you like all support them and lift mood.
Below: what each one does, a table of everyday ways to support them (with honest notes on the evidence), what changes in a UK winter, the myths worth ignoring, cortisol as the other side of the coin, and when low mood needs more than habits.
The short version: get outside in daylight, move most days, laugh with people, hug the people (and pets) you love, do things that give you a small sense of achievement, and protect your sleep. None of it is glamorous, and that’s the point: the boring basics are what the research supports.
What are the happy hormones?
“Happy hormones” is a popular nickname rather than a medical term. It usually means four chemical messengers that are linked with feeling good:
- Dopamine: part of the brain’s reward system. It’s involved in motivation, pleasure, learning, attention and movement.
- Serotonin: involved in mood, sleep, appetite, digestion and body temperature.
- Oxytocin: made in the hypothalamus and released by the pituitary gland. It has a big role in childbirth and breastfeeding, and also in bonding, trust and social behaviour.
- Endorphins: the body’s own pain relievers. The name comes from “endogenous morphine”, and they’re released in response to pain, stress and pleasurable things like exercise.
Strictly speaking, dopamine and serotonin work mainly as neurotransmitters (messengers between nerve cells), though both also act as hormones. What matters more is that these chemicals work together in a constantly shifting system. There’s no single switch for happiness.
So the useful question isn’t “how do I flood my brain with dopamine?” but “which everyday habits help my mood, sleep and energy?” Diet plays a part too: see food and mood.
Happy hormones at a glance
| Hormone | What it does | Everyday ways to support it | How good is the evidence? |
|---|---|---|---|
| Dopamine | Reward, motivation, pleasure, focus, learning | Finishing small goals, music you love, exercise, learning something new, enough sleep | Good brain-scan evidence for music; the “small wins” idea fits how reward works but isn’t directly measured in everyday life |
| Serotonin | Mood, sleep, appetite, digestion | Daylight (especially mornings), regular exercise, regular balanced meals with protein | Brain serotonin production tracks bright sunlight; “serotonin foods” are mostly hype (see myths) |
| Oxytocin | Bonding, trust, closeness | Hugs, cuddles, massage, time with friends and pets, kindness | Links between hugs and oxytocin come from small studies; the social benefits for mood are well supported |
| Endorphins | Natural pain relief, wellbeing | Aerobic exercise, laughing with friends, dancing, singing | PET scans show opioid release after long runs and social laughter, in small groups of volunteers |
The same things keep appearing: movement, daylight, people and play. A morning walk with a friend covers all four.
How to increase dopamine naturally
Dopamine is as much about wanting and anticipating as about pleasure itself, which is why it’s tied up with both healthy drive and habits like endless scrolling.
- Break goals into small, finishable steps. Ticking off a short task gives a sense of progress that keeps you going. See how to get motivated.
- Listen to music that gives you chills. In a brain-scanning study, people released dopamine in the striatum both while anticipating and while experiencing the peak moments of music they loved.
- Move. Exercise is one of the most consistent mood lifters we have, whatever the exact chemistry.
- Try something new. Learning a skill, cooking a new recipe or taking a different walking route all bring novelty, which the reward system responds to.
- Sleep enough. Poor sleep makes almost everything feel harder, including motivation. See sleep hygiene.
- Notice the quick-hit habits. Phones are built around unpredictable rewards. Cutting back can help: in a randomised trial, people who took a one-week break from social media had better wellbeing, depression and anxiety scores than those who carried on. See doomscrolling.
Low dopamine is part of some medical conditions, including Parkinson’s disease, and dopamine is involved in ADHD. Lifestyle habits are good for everyone, but they aren’t a substitute for medical care for these conditions.
How to boost serotonin naturally
- Get daylight, ideally in the morning. In a study of 101 healthy men, the brain’s serotonin production was lowest in winter and rose with the hours of bright sunlight on the day. Even a cloudy UK morning outdoors is far brighter than most indoor lighting.
- Exercise regularly. A large 2024 review of 218 trials found walking or jogging, yoga and strength training all reduced depression symptoms, with more intense exercise doing more.
- Eat regular, balanced meals. Serotonin is made from tryptophan, an amino acid in protein foods. You don’t need special “serotonin foods”, just enough protein, plenty of plants and regular meals. See gut health.
- Protect your sleep. Serotonin is a building block for melatonin, your sleep hormone, and your daylight exposure helps set your body clock.
For a fuller list, see our guide to boosting serotonin and dopamine naturally.
How to increase oxytocin
Oxytocin is often called the “love hormone” or “cuddle hormone”. Its best-known jobs are physical: it triggers contractions in labour and helps milk flow during breastfeeding. In the brain, it’s involved in bonding, trust and how we respond to other people.
- Hug more. In a small study of 59 women, those who reported more frequent hugs from their partners had higher oxytocin levels and lower blood pressure. It shows a link, not cause and effect, but hugging is low risk.
- Spend time with people face to face. Shared meals, a walk with a friend or a phone call with someone who knows you well.
- Stroke a pet. Many people find time with a dog or cat calming and grounding.
- Be kind. Small acts of giving appear in the NHS 5 steps to mental wellbeing because they create positive feelings and help you connect with others.
- Make time for touch. Oxytocin levels rise when you hug someone, and physical closeness with a partner is part of the same picture.
If you feel cut off from people, you’re far from alone, and it’s worth tackling gently. See loneliness.
How to release endorphins
- Aerobic exercise. In a PET scan study, 10 athletes ran for two hours. Afterwards, scans showed opioid release in mood-related brain areas, and the more euphoric runners felt, the stronger the signal. You don’t need to run for two hours, though: a brisk walk, swim or cycle is a good place to start.
- Laugh with friends. Watching comedy with close friends for 30 minutes triggered the brain’s own opioid release in 12 men, and raised pain thresholds in a follow-up experiment with men and women. Laughing together seems to matter more than laughing alone.
Happy hormones in a UK winter
Short, grey days are a real challenge. The NHS says it isn’t known exactly what causes seasonal affective disorder (SAD), but it’s thought to be linked to reduced daylight in winter, which may change brain chemicals like serotonin and melatonin that affect mood and sleep.
- Get outside in the middle of the day when the light is strongest, even for 15 minutes on a lunch break. The NHS advice for SAD is to get as much natural daylight as you can.
- Sit by a window at work or home where you can.
- Consider a light box. The NHS says it isn’t usually available on the NHS because the evidence is unclear, but many people find it helps. If you buy one, the NHS suggests 10,000 lux, UV-free and UKCA or CE marked, and speak to a GP first if you have an eye condition or take medicines that increase light sensitivity.
- Keep up vitamin D. Vitamin D isn’t a happy hormone, but between October and early March we don’t make enough from UK sunlight. The NHS advises everyone to consider a daily 10 microgram supplement in autumn and winter. See vitamin D in winter.
- Keep plans with people, even when the dark evenings make staying in tempting.
More in our guide to seasonal affective disorder.
The NHS 5 steps to mental wellbeing
The NHS doesn’t talk about happy hormones, but its 5 steps to mental wellbeing line up neatly with everything above:
| NHS step | Simple ways to do it | Overlaps with |
|---|---|---|
| 1. Connect with other people | A fixed time to eat together, a day out with a friend, lunch with a colleague | Oxytocin, endorphins (shared laughter) |
| 2. Be physically active | Find activities you enjoy; no need for hours in a gym | Endorphins, dopamine, serotonin |
| 3. Learn new skills | Cook something new, a DIY project, a course or hobby | Dopamine (novelty and progress) |
| 4. Give to others | Thank someone, volunteer, help a neighbour | Oxytocin |
| 5. Pay attention to the present moment | Mindfulness: noticing your thoughts, body and surroundings | A calmer stress response (see cortisol) |
The NHS notes that being active can cause chemical changes in your brain which can help to positively change your mood. New to step 5? Start with mindfulness for beginners.
Happy hormone myths
Myth: a “dopamine detox” resets your brain
You can’t remove dopamine from your brain, and you wouldn’t want to: you need it to move, focus and feel motivated. What does help is cutting back on quick-reward habits like scrolling and replacing them with slower, more satisfying activities. That’s behaviour change, not a detox. See dopamine detox.
Myth: certain foods are “serotonin foods”
Bananas, turkey and chocolate are often sold as serotonin boosters. Two points undercut this:
- Most of your serotonin is made in your gut, not your brain. Cells lining the gut account for around 90% of the body’s serotonin, where it mainly helps control how the gut moves and is taken up by platelets in the blood.
- Your brain makes its own. Brain serotonin is made from tryptophan, which has to cross the blood-brain barrier and competes with other amino acids to get in. So a single high-tryptophan food doesn’t simply turn into more brain serotonin.
A varied diet with regular meals still matters. Just don’t expect one food to act like a switch.
Myth: depression is simply low serotonin
A 2022 umbrella review led by UCL researchers found no consistent evidence that depression is caused by low serotonin. Depression is complex, with many possible causes, and antidepressants remain one of the recognised NHS treatments. If you take one, don’t stop or change it without speaking to your GP.
Myth: you can buy a “happy hormone” supplement
In Great Britain, only authorised health claims can be used on foods and supplements, so be wary of products that promise to “boost happy hormones”. Our own products don’t raise hormones, and we won’t say they do.
Cortisol: the other side of the coin
Cortisol, the “stress hormone”, helps you wake up and rise to a challenge. Problems start when stress is constant and you rarely recover.
- Sleep loss keeps cortisol up. In one study, after a night of partial or total sleep loss, cortisol the next evening was 37% to 45% higher than normal.
- Exercise intensity matters. Hard sessions (60% to 80% of maximum effort) raised cortisol for a while afterwards, while gentle exercise actually lowered it once the researchers adjusted for other factors. If you’re stressed and exhausted, a calm walk may suit you better than a punishing workout.
Many of the habits that support the happy hormones also help keep stress in proportion. See how to lower cortisol naturally.
A happy hormone day
How it all fits into a normal UK weekday:
- Morning: open the curtains straight away and get outside within an hour or so of waking, even if it’s just the walk to the station. See a morning routine for energy.
- Start of work: pick one small, finishable task and do it first.
- Lunch: eat away from your desk, ideally outside or with someone, and include some protein.
- Afternoon: a 10 minute walk or a playlist you love when energy dips.
- Evening: move your body in a way you enjoy, ring a friend, cook something new, or watch something that makes you laugh with the people you live with.
- Wind-down: screens away, a warm drink, a few lines in a journal and a regular bedtime.
If an evening ritual helps you switch off, our Magnesium Glycinate Sleep Complex is a berry-flavoured drink with magnesium bisglycinate and citrate, glycine, L-theanine, chamomile, passionflower, hops and oat straw. Magnesium contributes to normal psychological function and to the reduction of tiredness and fatigue. Our Reishi Mushroom Adaptogenic Complex is a hot chocolate made with reishi mushroom extract, organic cacao, maca, coconut milk powder and coconut sugar, nice to share on a cold evening. Cacao naturally contains a little caffeine, so have it earlier if you’re sensitive.
When to see a GP
Everyone has low days, and a low mood often lifts after a few days or weeks with rest, support and small changes. The NHS advises seeing a GP if:
- you’ve had a low mood for more than 2 weeks
- you’re struggling to cope
- the things you’re trying yourself aren’t helping
A low mood lasting 2 weeks or more could be a sign of depression, especially if you’re getting no enjoyment out of life, feeling hopeless or finding it hard to concentrate. If you’re 18 or over (16 in some areas), you can refer yourself to NHS Talking Therapies without seeing a GP. More in low mood vs depression.
If you need help now: call 111 and choose the mental health option, or use 111 online, for urgent advice. Call Samaritans free on 116 123, any time, to talk to someone. Call 999 or go to A&E if your life or someone else’s is at risk, or you don’t feel you can keep yourself safe.
Related guides
- For the supplement often sold for serotonin, see 5-HTP: benefits, side effects and safety.
- Morning light is one of the simplest winter habits; our SAD lamp guide covers light boxes and free daylight tips.
- Want the detail on the amino acid behind serotonin? See tryptophan: foods, sleep, mood and safety.
FAQs
What are the 4 happy hormones?
Dopamine (reward and motivation), serotonin (mood, sleep and appetite), oxytocin (bonding and trust) and endorphins (natural pain relief). Dopamine and serotonin mainly work as neurotransmitters, but the nickname has stuck.
How can I boost my happy hormones naturally?
Get daylight every day, exercise regularly, laugh and spend time with people you like, hug the people and pets you love, set small achievable goals and protect your sleep.
Which foods boost happy hormones?
No single food acts like a switch. Most serotonin is made in the gut, and the brain makes its own from tryptophan. Regular, balanced meals with enough protein and plenty of plants are the sensible approach.
What is the fastest way to release endorphins?
Aerobic exercise and laughing with friends are two of the best-studied ways. A brisk walk, a dance around the kitchen or watching a comedy together all count.
What is the difference between dopamine and serotonin?
Dopamine is linked with reward, motivation and wanting things. Serotonin is linked with mood, sleep, appetite and digestion. They work together, along with many other brain chemicals.
Do supplements boost happy hormones?
Be wary of products that promise this. In Great Britain only authorised health claims are allowed. For example, magnesium contributes to normal psychological function, which is different from raising a hormone.
Sources
- NHS. 5 steps to mental wellbeing.
- NHS. Get help with low mood, sadness or depression.
- NHS. Seasonal affective disorder (SAD).
- NHS. Vitamin D.
- NHS. Where to get urgent help for mental health.
- Salimpoor VN et al (2011). Anatomically distinct dopamine release during anticipation and experience of peak emotion to music. Nature Neuroscience.
- Lambert GW et al (2002). Effect of sunlight and season on serotonin turnover in the brain. The Lancet.
- Noetel M et al (2024). Effect of exercise for depression: systematic review and network meta-analysis of randomised controlled trials. BMJ.
- Light KC et al (2005). More frequent partner hugs and higher oxytocin levels are linked to lower blood pressure and heart rate in premenopausal women. Biological Psychology.
- Boecker H et al (2008). The runner’s high: opioidergic mechanisms in the human brain. Cerebral Cortex.
- Manninen S et al (2017). Social laughter triggers endogenous opioid release in humans. Journal of Neuroscience.
- Jenkins TA et al (2016). Influence of tryptophan and serotonin on mood and cognition with a possible role of the gut-brain axis. Nutrients.
- Moncrieff J et al (2023). The serotonin theory of depression: a systematic umbrella review of the evidence. Molecular Psychiatry.
- Lambert J et al (2022). Taking a one-week break from social media improves well-being, depression, and anxiety: a randomized controlled trial. Cyberpsychology, Behavior, and Social Networking.
- Leproult R et al (1997). Sleep loss results in an elevation of cortisol levels the next evening. Sleep.
- Hill EE et al (2008). Exercise and circulating cortisol levels: the intensity threshold effect. Journal of Endocrinological Investigation.
- Cleveland Clinic. Oxytocin, Dopamine, Serotonin and Endorphins.
- GOV.UK. Great Britain nutrition and health claims (NHC) register.
This guide is general information, not medical advice. Evopure makes the Magnesium Glycinate Sleep Complex and Reishi Mushroom Adaptogenic Complex.
