Your immune system is a complex network that helps protect you from infection and disease. No single food, supplement or habit can guarantee that you will not become ill, but everyday health choices can support normal immune function and reduce your exposure to respiratory infections.
1. Eat a varied, balanced diet
Choose a variety of vegetables, fruit, whole grains, protein foods and healthy fats. These foods supply the nutrients your body needs for normal immune function and general health. Supplements are not a substitute for a balanced diet, and excessive amounts of some vitamins or minerals can be harmful. Speak with your GP, pharmacist or another qualified health professional before starting a supplement, especially if you take medicines or have a health condition.
2. Make sleep a priority
Good-quality sleep gives the body time to recover and supports normal immune responses. Most adults need around seven to nine hours a night, although individual needs vary. A regular sleep and wake time, a dark and comfortable bedroom, and less screen use before bed may help. If sleep problems persist, discuss them with your doctor.
3. Keep moving
Regular physical activity supports overall health, sleep and emotional wellbeing. Choose movement that suits your ability and circumstances—walking, swimming, gardening and gentle strength work can all count. Build up gradually and seek medical advice if illness, injury or a health condition affects what is safe for you.
4. Manage ongoing stress
Long periods of stress can affect sleep, appetite and other health habits. Small, repeatable practices can help: take a quiet walk, use slow breathing, spend time outdoors, write down concerns or speak with someone you trust. Professional support is available if stress becomes difficult to manage.
5. Practise good hygiene and cleaner-air habits
Wash your hands with soap and clean running water, especially after coughing, sneezing or using the toilet and before preparing or eating food. Cover coughs and sneezes, avoid touching your face with unwashed hands, and improve indoor ventilation when practical. These steps help reduce the spread of germs; they do not “boost” immunity.
6. Keep recommended vaccinations up to date
Healthy habits support general immune health, while vaccines train the immune system to recognise specific diseases. The vaccines recommended for you depend on factors such as age, health, work, travel and pregnancy. Ask your GP or pharmacist which vaccinations are appropriate for you.
A steady approach works best
Start with one realistic change and build from there. If you are frequently unwell, have unexplained symptoms or think you may have a nutrient deficiency, seek individual medical advice rather than relying on supplements or online remedies.
General information only. This article does not replace medical advice, diagnosis or treatment.