By Gypsi Paz, Baptist Health System Dietetic Intern

The winter months bring cheerful celebrations, twinkling lights, and delicious comfort foods. They also bring something less joyful: cold and flu season. While you cannot fully avoid seasonal germs, the foods you eat during the holidays can help support your body’s natural defenses when you need them most.

Here are festive, seasonal foods that not only taste great, but also provide nutrients that help the immune system function at its best.

Citrus Fruits

Examples: oranges, grapefruit, lemons, clementines

Citrus fruits appear in abundance during the holidays, and they offer a generous boost of vitamin C. This nutrient helps your body create and activate white blood cells and provides antioxidant protection against illness.

Cheerful ideas:
 • Serve a bowl of clementines on your table for easy snacking
 • Add lemon slices to warm tea after a chilly outing
 • Make a simple citrus salad with pomegranate seeds for a colorful appetizer

Citrus adds brightness to winter meals while offering a seasonal immune boost.

Berries

Examples: blueberries, strawberries, raspberries, blackberries

Berries are rich in flavonoids, antioxidants, and fiber. These compounds may help reduce inflammation while supporting gut health, which plays an important role in immunity.

Cheerful ideas:
-Use frozen berries in holiday smoothies
-Add berries to yogurt parfaits with granola
-Top pancakes or waffles with a warm berry compote

Frozen berries are often more affordable and just as nutritious as fresh.

Leafy Greens

Examples: spinach, kale, arugula, Swiss chard

Leafy greens are not as glamorous as fudgy brownies, but they provide vitamins A and C along with folate, nutrients that help your body produce and protect immune cells. They also support a healthy gut environment where much of the immune system lives.

Cheerful ideas:
 • Add spinach to egg bakes or quiches
 • Serve a kale salad with dried cranberries and pecans
 • Stir greens into soups, stews, and casseroles

Think of leafy greens as a nutrition stocking stuffer. Small, helpful, and always appreciated.

Nuts and Seeds

Examples: almonds, walnuts, pistachios, pumpkin seeds

Holiday snacks and desserts often include nuts and seeds, which supply vitamin E, zinc, and healthy fats. These nutrients help protect cells and regulate immune responses.

Cheerful ideas:
 • Add nuts to salads with dried fruit
 • Enjoy mixed nuts as a festive snack
 • Use crushed nuts in baked goods

A seasonal bowl of nuts doubles as decor and nutrition.

Fatty Fish

Examples: salmon, sardines, tuna, trout

Fatty fish provides omega 3 fatty acids and vitamin D. These nutrients help manage inflammation and may support immune cell function.

Cheerful ideas:
 • Baked salmon with citrus glaze
 • Tuna salad wraps for easy lunches
 • Warm grain bowls with vegetables and fish

Fish can be a nourishing break from heavier holiday foods.

Sweet Potatoes

Sweet potatoes are rich in beta carotene, which the body converts to vitamin A. Vitamin A helps maintain healthy skin and mucous membranes, which act as a defense against pathogens.

Cheerful ideas:
 • Roasted sweet potatoes with cinnamon
 • Sweet potato mash topped with toasted pecans
 • Warm seasonal salads with sweet potato cubes

Sweet potatoes bring comfort and nourishment to winter tables.

Tea

Tea is the unofficial drink of winter comfort. Warm, soothing, and full of antioxidants.

Sip and be cozy
 • Green tea with lemon
 • Ginger tea after big meals
 • Peppermint tea before bed

Simple Winter Habits That Support Immunity

Food plays an important role, but daily habits also matter. Prioritize:
 • Enough sleep
 • Regular hydration
 • Stress reduction
 • Enjoyable movement

Holiday joy and relaxation play a part in well-being too.

Festive Takeaway

Winter is full of delicious traditions, cozy meals, and occasional sniffles. Adding colorful produce, healthy fats, lean proteins, and warm beverages can help support your immune system while keeping meals fun and flavorful.

You do not need to skip holiday favorites. Just sprinkle in nutrient rich foods wherever they fit, enjoy your celebrations, and let seasonal foods work in your favor.

A cheerful, well-fed body is a resilient body.

Need help improving your diet? It can be tough, but you don’t have to do it alone. We have lots of options of support at https://food4success.com .

References

1. The best immune-boosting foods to eat this cold and flu season, according to Dietitians. Accessed December 3, 2025. https://www.prevention.com/health/a69500925/immunity-foods-for-cold-flu-season/. 2. Foods to boost the immune system. Physicians Committee for Responsible Medicine. Accessed December 4, 2025. https://www.pcrm.org/news/blog/foods-boost-immune-system?gad_source=1&gad_campaignid=9834242607&gbraid=0AAAAADfvIMeeV3uBziouFfuuP01NcSha5&gclid=Cj0KCQiAosrJBhD0ARIsAHebCNow6PcZZ2dFE8su_yUStCqFRNdW3sGo6C6lvZVnG7eH-AR8Nb9e0ccaAsVQEALw_wcB.