Health · UK guidance

Lifestyle Factors That Affect Your Health (Beyond Diet)

Food is one piece. Here are the others, with the UK guidance for each.

Lifestyle factors and what UK guidance says

Adult guidance from the NHS pages listed in the sources. Children, pregnancy and some health conditions have different advice.
Factor	UK guidance for adults	Source
Physical activity	At least 150 minutes of moderate or 75 minutes of vigorous activity a week, plus strengthening activities on at least 2 days; break up long periods of sitting.	NHS
Smoking	Free NHS stop smoking services, stop-smoking medicines and advice on using e-cigarettes to quit are available.	NHS
Alcohol	Regularly drinking more than 14 units a week risks damaging your health.	NHS
Sleep	Keep a regular sleep routine, relax before bed (no screens for an hour), swap caffeinated drinks at bedtime for a warm milky drink or herbal tea, and avoid alcohol and nicotine 1 to 2 hours before bed.	NHS Every Mind Matters
Fluids	About 6 to 8 cups or glasses of fluid a day, more in heat, during activity or illness; water, lower-fat milk and lower-sugar drinks all count.	NHS
Sunlight & vitamin D	From about late March to September most people make enough vitamin D from sunlight; in autumn and winter consider a 10 microgram daily supplement.	NHS
Sun safety	Seek shade between 11am and 3pm from March to October in the UK, never burn, and use at least SPF 30 with 4-star UVA protection.	NHS
Hand hygiene	Wash hands with soap and water for about 20 seconds; it is one of the easiest ways to protect against illnesses such as food poisoning and flu.	NHS
Mental wellbeing	Five steps: connect with others, be physically active, learn new skills, give to others, and pay attention to the present moment.	NHS

Physical activity: the factor most people can grow

You don’t need a gym. Brisk walking, cycling, dancing and active jobs around the house all count towards the 150 minutes, and strength can come from carrying shopping, gardening or body-weight exercises (NHS). If you have a health condition or haven’t been active for a while, build up gradually and check with a GP if you have concerns.

Sunlight and vitamin D: a balance

Sunlight on skin is the main way most people get vitamin D in summer, but between October and early March people in the UK don’t make enough from sunlight. That is why the NHS says everyone should consider a daily 10 microgram supplement in autumn and winter, and some groups all year, such as people who are rarely outdoors or usually cover most of their skin. People with dark skin may also not make enough and should consider a year-round supplement (NHS).

At the same time, the NHS advises shade, clothing and sunscreen to avoid burning. Supplements and food sources are covered in do you need supplements?

Mental wellbeing

The NHS 5 steps to mental wellbeing are practical: keep in touch with people, stay active, learn something new, do something for others, and notice the present moment. If low mood, anxiety or stress are affecting daily life, speak to a GP or use your local NHS talking therapies service.

Lifestyle and medical care work together

Healthy habits lower the risk of many conditions, but they are not a replacement for diagnosis, treatment or medicines when you need them. Keep taking prescribed treatment, and ask your GP or pharmacist before making big changes if you have a health condition.

Start small

Pick one factor where you are furthest from the guidance and change one thing for two weeks, such as a daily 10-minute walk or one alcohol-free day more each week. Small, repeatable changes are easier to keep.

Common questions

What lifestyle factors affect health the most?

Not smoking, being physically active, eating a balanced diet, keeping a healthy weight and drinking within UK alcohol guidance are the core ones; sleep and mental wellbeing also matter.

How much exercise do adults need?

UK guidance is at least 150 minutes of moderate (or 75 minutes of vigorous) activity a week, plus strength activities on at least 2 days.

How much water should I drink a day?

The UK guide is about 6 to 8 cups or glasses of fluid a day. Tea, coffee and milk count, and you may need more in hot weather or when active.

Is sunlight enough for vitamin D?

For most people in the UK, from about late March to September, yes. From October to early March it isn’t, so the NHS suggests considering a supplement.

Keep learning

Start with food: 8 healthy eating changes