How to Support Your Immune System in Winter

Imagine waking up on a cold winter morning with a scratchy throat, a stuffy nose, and that familiar feeling of tiredness. Perhaps someone at work has been unwell, or a family member has recently come down with a cold. During the colder months, these situations can become more common, especially when we spend more time indoors and our usual routines begin to change.

Winter can bring a few extra challenges to our health and daily habits. Shorter days, less time outdoors, and reduced physical activity can make it harder to maintain the routines that help us feel our best. It is also a time when respiratory infections, such as colds and flu, tend to circulate more widely.

While we cannot avoid every bug or guarantee that we will stay healthy all season, we can take steps to support our immune system and give our bodies the care they need.

Our immune system works every day to protect us from harmful germs and other substances that enter the body. It relies on different cells, tissues, and organs working together to recognise and respond to potential threats. Some parts of this system provide a quick, general response, while others learn to recognise specific germs and respond to them in the future.

There is no single food, supplement, or routine that can make our immune system stronger overnight. Instead, supporting immune health is about building steady habits that provide our bodies with the nutrients, movement, rest, and care they need.

Here are ten practical ways to support your immune health throughout winter.

1. Eat a Colourful and Balanced Diet

One of the most helpful ways to support your immune system is to give your body a wide range of nutrients through food. Vitamins and minerals play important roles in normal immune function, while protein, healthy fats, and fibre also contribute to overall health.

Try to include different colours on your plate by eating a variety of fruits and vegetables. Berries, citrus fruits, leafy greens, carrots, peppers, and broccoli are all useful options. You can also include sources of healthy fats, such as olive oil, avocado, walnuts, seeds, and oily fish.

Rather than focusing on one particular food, aim for variety throughout the week. Different foods provide different nutrients, so a balanced approach can help you meet your body's needs.

2. Look After Your Gut Health

Your digestive system is closely connected to your immune system. The gut contains a large community of microorganisms, often called the gut microbiome, which plays a role in digestion and other important processes in the body.

To support a healthy gut environment, include fibre-rich foods such as oats, beans, lentils, whole grains, fruit, and vegetables. Fermented foods, including live yoghurt, kefir, kimchi, and sauerkraut, can also be part of a varied diet.

Small changes can make a difference to your daily eating habits. For example, you could add berries to breakfast, choose wholegrain bread, or include beans in soups and stews. These simple choices help increase your fibre intake while adding variety to your meals.

3. Include Foods Rich in Vitamins and Minerals

Certain nutrients are particularly important for normal immune function. Vitamin C, vitamin D, zinc, and other essential nutrients help the body carry out different processes involved in maintaining health.

Vitamin C can be found in foods such as oranges, kiwi fruit, strawberries, peppers, and broccoli. Zinc is present in foods like meat, shellfish, dairy products, beans, nuts, and seeds. Vitamin D is found naturally in only a small number of foods, including oily fish, egg yolks, and some fortified products.

During winter, it can be useful to pay closer attention to your vitamin D intake, particularly if you spend less time outdoors. In the UK, public health guidance recommends that adults consider taking a daily 10 microgram vitamin D supplement during autumn and winter. If you have specific health needs or are unsure which supplements are suitable, speak with a healthcare professional.

4. Make Sleep a Priority

Sleep is an important part of maintaining good health. While we rest, the body carries out many processes that help support normal immune function. Consistently getting too little sleep may affect the body's ability to respond to infections.

Most adults need around seven to nine hours of sleep each night, although individual needs can vary. If your sleep routine has become irregular, try making small adjustments rather than changing everything at once.

Keep your bedtime and waking time as consistent as possible, create a comfortable sleeping environment, and give yourself time to relax before going to bed. Reducing screen use in the evening and limiting caffeine later in the day may also help you settle more easily.

5. Stay Active Even When It Is Cold Outside

When temperatures drop, it can be tempting to spend more time indoors and become less active. However, regular physical activity is an important part of looking after your overall health.

You do not need an intense workout to get moving. Walking, cycling, swimming, dancing, yoga, and strength exercises can all form part of a balanced activity routine. If going outside is not appealing, try a short home workout or some gentle stretching.

A useful goal for many adults is at least 150 minutes of moderate-intensity activity each week, alongside strength-based activities on two or more days. You can divide this into shorter sessions that fit your schedule.

The key is to choose activities you enjoy and can maintain. Regular movement supports your general wellbeing and can help you feel more energised during the colder months.

6. Find Healthy Ways to Manage Stress

Stress is a normal part of life, but ongoing pressure can affect how we feel and how well we look after ourselves. When work, family responsibilities, and daily demands build up, healthy routines such as eating well, sleeping enough, and staying active can become harder to maintain.

Finding ways to manage stress is therefore an important part of caring for your overall health.

You could try taking a short walk, practising gentle breathing exercises, listening to music, writing in a journal, or spending time outdoors when the weather allows. Yoga and meditation may also help you create moments of calm during a busy day.

You do not need to remove every source of stress from your life. Start by finding small opportunities to pause, recharge, and make time for activities that help you feel more balanced.

7. Drink Enough Water Throughout the Day

Hydration is easy to overlook during winter. Since we may not feel as thirsty as we do in warmer weather, it can be tempting to drink less than our bodies need.

Water supports several important functions, including digestion, circulation, and the regulation of body temperature. Staying hydrated also helps keep the lining of the nose and throat moist, which forms part of the body's natural defences.

Keep a glass or bottle of water nearby and drink regularly throughout the day. Warm drinks, such as herbal tea or warm water with lemon, can also be comforting during colder weather. Remember that foods with a high water content, such as soups, fruit, and vegetables, can contribute to your fluid intake too.

8. Be Mindful of Foods and Drinks You Consume Regularly

A balanced diet is not about avoiding every treat or following strict food rules. However, the foods we eat most often can influence our overall health and nutritional intake.

Try to make whole and minimally processed foods the foundation of your meals. Foods with high amounts of added sugar, processed meats, and heavily processed snacks are best enjoyed less often, rather than making up most of your diet. It is also worth being mindful of alcohol consumption, as drinking too much can affect sleep and general wellbeing.

Instead of focusing on what you need to remove, think about what you can add. Include more vegetables, whole grains, legumes, nuts, and other nourishing foods in your meals. These choices can help you build a balanced eating pattern without feeling overly restricted.

9. Keep Up with Good Hygiene and Recommended Vaccinations

Everyday habits can help reduce your exposure to germs and lower the chance of passing infections to others. Washing your hands regularly with soap and water, particularly before preparing or eating food and after using the toilet, is a simple but important step.

Try to avoid touching your eyes, nose, and mouth with unwashed hands. If you have symptoms of a respiratory infection, consider limiting close contact with others, especially people who may be more vulnerable. Keeping indoor spaces well ventilated can also help reduce the spread of respiratory viruses.

Vaccination is another important way to protect yourself against certain infections. The seasonal flu vaccine is updated to help protect against the strains expected to circulate, and it is particularly important for people who are eligible under local health guidance. If you are unsure which vaccinations are recommended for you, speak with your GP or pharmacist.

10. Avoid Smoking and Make Time for Fresh Air

Smoking can affect the body's natural defences and increase the risk of respiratory infections. If you smoke, seeking support to stop can be a valuable step towards better long-term health. A healthcare professional or local stop-smoking service can help you explore options that suit your needs.

It is also helpful to make time for fresh air and a change of scenery. Even during colder months, a short walk outdoors can give you a chance to move your body, enjoy natural daylight, and take a break from indoor routines.

You do not need to spend hours outside. A little time in the fresh air, when the weather allows, can be a simple way to support your general wellbeing throughout winter.

Do You Need an Immune Support Supplement?

A well-balanced diet should be the starting point for meeting your nutritional needs. However, there may be times when it is difficult to get enough of certain nutrients through food alone. People with restricted diets, limited food choices, or specific nutritional needs may benefit from additional support.

Supplements can help fill certain nutritional gaps, but they are not a quick fix for preventing colds or flu. Taking more than you need does not necessarily provide extra benefits, and some nutrients can be harmful in excessive amounts. It is best to consider your individual needs and speak with a healthcare professional before starting a new supplement, particularly if you take medication or have an existing health condition.

Supporting Your Immune System with Everyday Nutrition

If you are looking for a convenient way to complement your daily nutrition routine, the USANA Healthy Immunity Support – Immunity Boost Pack brings together a range of products designed to support nutritional intake and overall wellbeing.

The pack includes CellSentials, a daily multivitamin and multimineral system; Proglucamune, which contains zinc, reishi and shiitake mushroom extracts, and beta-glucans; USANA Probiotic, featuring Lactobacillus rhamnosus LGG and Bifidobacterium BB-12; BiOmega, a source of omega-3 fatty acids; Proflavanol C200, which combines grape seed extract and vitamin C; and Fibergy Active, a fibre-rich drink powder containing soluble and insoluble fibre.

This combination may be particularly relevant for people with demanding routines, such as frequent travellers, shift workers, and physically active adults who want to give more attention to their nutritional intake and recovery habits. The pack also features USANA's InCelligence formulation approach, which is part of how the company develops its nutritional products.

As with any supplement, it is important to consider your personal needs and use products as directed. Remember that supplementation works best alongside a varied diet, regular movement, sufficient sleep, and other healthy lifestyle habits. It should not replace a balanced approach to health or medical advice.

Small Habits Can Make a Difference to Your Winter Wellbeing

Supporting your immune system does not require a complicated routine or a complete lifestyle change. It begins with the everyday choices that help your body function well, from eating a variety of nourishing foods and staying active to getting enough sleep and managing stress.

You may not be able to prevent every illness, and there is no guaranteed way to avoid catching a cold or flu. However, taking care of your overall health can help you build a more supportive foundation for the colder months.

Start with one or two habits that feel manageable, then gradually make them part of your routine. Consistency matters more than perfection, and even small changes can be a positive step towards better long-term wellbeing.

Take the First Step Towards Better Wellbeing

If you would like support in building healthier routines that fit your lifestyle, you are warmly invited to complete the free Health Goals Assessment Questionnaire.

This is an opportunity to explore your current habits, challenges, and health goals so we can better understand what may be influencing your progress. After completing the questionnaire, you can book a Health Goals Assessment session. Together, we'll discuss practical next steps and create a personalised plan that feels realistic, sustainable, and supportive of your long-term wellbeing.

References:

Cafasso, J. (2020, December 2). Q&A: Immune-Supporting Tips to Prep for the Winter Months. Healthline.