A more intentional, integrative approach to staying well as the seasons change.
By Katie Seremet, FNP-BC | Journey to Wellness Within Integrative Care
As the days get shorter, the temperatures drop, and we spend more time indoors, our routines and our bodies start to face a different set of demands.
Winter tends to bring more respiratory infections, less natural light, changes in how much we move, and disruptions to the everyday rhythms that keep us feeling well.
It's tempting to respond by stocking up on immune-boosting supplements or hunting for the latest product that promises to get us through the season. I understand the impulse. But in my experience, supporting immune health is rarely about one supplement, one food, or one quick fix.
Your immune system is a complex network, and it depends on good nutrition, sleep, metabolic health, movement, and enough recovery. Rather than waiting until you're run down, winter is a good time to revisit the foundations that help your body function well.
Here's where I would start.
1. Give your immune system the building blocks it needs
Your immune system needs a steady supply of nutrients to build immune cells, help them communicate, and keep them working.
Protein is one of the most overlooked foundations. Antibodies and many immune-related proteins are made from amino acids, so when protein intake is consistently low, your body may not have what it needs for normal immune function and tissue repair.
Before reaching for a protein powder, I'd invite you to look at your meals. Do they regularly include quality protein like eggs, fish, poultry, Greek yogurt, legumes, or other foods that work well for your body?
Micronutrients matter, too. Zinc supports immune cell function and signaling. Vitamin C contributes to immune function and works as an antioxidant. Selenium supports antioxidant enzymes and immune processes. Iron is necessary for normal immune cell function, although both too little and too much can be a problem.
Here's the important piece: more isn't necessarily better.
Taking nutrients without knowing whether you need them can create unnecessary expense and, in some cases, real health risks. I generally encourage a food-first approach, with targeted supplements when there's a reason for them.
2. Remember that your gut and immune system are connected
A significant portion of your immune system is associated with your gastrointestinal tract. Your gut isn't only a digestive organ. It's an important meeting point between the outside world and your internal immune system.
The gut microbiome, the community of microorganisms living in your digestive tract, helps support the intestinal barrier and influences immune signaling.
One of the most practical ways to support it is through variety. Consider including:
A range of colorful vegetables and fruits
Fiber-rich foods like beans, lentils, oats, nuts, and seeds
Fermented foods like yogurt, kefir, sauerkraut, and kimchi, if you tolerate them
Different plant foods throughout the week to encourage microbial diversity
Fiber is especially valuable because certain gut bacteria ferment it into short-chain fatty acids, including butyrate, which help support the intestinal environment and immune regulation.
You don't need an elaborate gut health protocol. Consistency and variety are usually worth more than chasing the newest probiotic trend.
3. Pay attention to vitamin D in the darker months
For those of us living in northern climates, winter means far fewer chances for our skin to make vitamin D from sunlight.
Vitamin D plays a role in bone health, calcium regulation, and normal immune function. Low levels are common, though individual risk varies with geography, skin pigmentation, age, sun exposure, diet, and other factors.
It may be worth talking with your healthcare provider about testing, especially if you have risk factors for deficiency.
4. Don't sacrifice sleep in the name of productivity
Sleep is an active biological process, not just downtime. While you sleep, your body coordinates immune regulation, tissue repair, memory consolidation, and metabolic health.
Consistently inadequate sleep can affect immune responses and is associated with greater susceptibility to respiratory infections.
As the holidays approach, sleep is often the first thing we trade away. Late nights, extra commitments, travel, and irregular schedules slowly wear down our recovery.
A few simple practices can make a meaningful difference:
Keep a relatively consistent sleep and wake schedule
Get natural light in the morning when you can
Keep your bedroom cool, dark, and comfortable
Limit alcohol, especially close to bedtime
Create a wind-down routine that lets your brain transition out of the day
Sleep isn't a luxury to squeeze in after everything else is done. It's one of the foundations that allows the rest of your physiology to work.
5. Keep moving, but respect recovery
Movement does far more than build fitness. Regular physical activity supports cardiovascular health, insulin sensitivity, metabolic function, mood, and immune regulation. Moderate, consistent activity is a valuable part of staying well.
That doesn't mean winter is the time to push harder or force yourself into an intense routine. Walking, strength training, mobility work, and other movement you actually enjoy can help you maintain your physical capacity through the colder months.
The other half of the conversation is recovery. Chronic underfueling, too little sleep, and heavy training without adequate rest can add stress to the body.
The goal isn't to log the most exercise. It's to build a sustainable relationship with movement that supports your health over time.
6. Recognize the role of stress in immune health
Stress isn't inherently harmful. Our bodies are designed to respond to challenges.
The trouble comes when demands become prolonged and recovery becomes insufficient. Chronic stress can influence immune signaling, sleep, inflammatory pathways, and the behaviors that support our health.
It also affects the basics. When life feels overwhelming, we skip meals, move less, sleep poorly, and lean on convenience foods.
So supporting immune health is about more than nutrition and supplements. It also means asking how much you're carrying, whether you're allowing time to recover, and whether your daily routines support or undermine what your body needs.
Sometimes the most useful intervention isn't another supplement. It's creating enough space to sleep, eat consistently, move, and recover.
A few of my personal favorites
Once the foundations are in place, I like having a few extras on hand. These are the ones I reach for when the season gets busy:
Rapid Immune Boost: one of my go-to products when I want some added support during a busy or run-down stretch.
Fire cider: a traditional folk tonic, typically made with apple cider vinegar, garlic, onion, ginger, horseradish, and hot peppers. It’s warming, spicy, and one of my cold-weather favorites.
Oscillococcinum: a homeopathic remedy that I like to keep in the house for those first moments of feeling off.
None of these replace the foundations above, and what works for one person may not suit another. Please check labels, and talk with your provider first if you’re pregnant, nursing, or taking medications.
A different way to think about winter wellness
We often approach immune health reactively. We wait until we're sick, exhausted, or run down before asking what our bodies might need.
But resilience is built through the ordinary things we do consistently: the meals that nourish us, the sleep we protect, the movement we enjoy, the sunlight we seek out, and the space we make for recovery.
It's also built by remembering that our bodies aren't machines that can be optimized indefinitely without consequence.
You don't need an elaborate supplement regimen or a perfect wellness routine to support your health this winter. Start with the foundations. Notice where there may be gaps. Make changes that are realistic and sustainable. And remember that individualized care matters, because what one body needs may be different from what another body needs.
A reflection to take with you
As winter approaches, instead of asking what else you should add to your wellness routine, what might your body be asking for more consistently?
More nourishment? More sleep? More movement? More recovery?
Sometimes supporting your health begins with returning to the basics.
Your health is shaped not only by the things you do occasionally, but by the things you give your body consistently.
Katie is a Family Nurse Practitioner and the founder of Journey to Wellness Within Integrative Care, where she supports people through integrative and functional medicine, hormone health, and mental health care.