null
my-cart-icon svg-arrow-next svg-arrow-prev

How to Keep Your Immune System Happy During the Winter Months

Nov 4th, 2025 by D'Adamo Personalized Nutrition

As the days grow shorter and the weather colder, winter often brings with it more than cozy sweaters and warm drinks; it’s also the season when our immune systems can use a little extra support. Colder temperatures, drier air and more time spent indoors can all increase susceptibility to colds, flus and other seasonal bugs. Fortunately, with the right lifestyle choices and targeted supplements, you can help your immune system stay strong and resilient all season long.

Prioritize the Foundations First

Before supplements, it’s important to remember that your daily habits lay the groundwork for immune health. This includes:

  • Getting consistent sleep (7-9 hours a night)
  • Eating a nutrient-dense, Blood Type Diet: rich in beneficial vegetables, fruits, healthy fats and quality proteins
  • Managing stress through movement, meditation, social connection or time in nature—if you can brave the cold

Once those basics are in place, strategic supplementation can offer an added layer of support. We at D’Adamo Personalized Nutrition often recommend:

Phyto D 2000: The Sunshine Vitamin for Immune Strength

During the darker months, vitamin D deficiency is incredibly common, and vitamin D plays a crucial role in immune regulation. Low levels have been associated with increased susceptibility to infection and slower immune response. Phyto D 2000 (with vitamin K for better absorption) is a clean, plant-based vitamin D3 supplement that provides 2000 IU per serving, supporting immune cell function and overall immune system health. It’s an essential winter staple, especially for those in northern climates or spending more time indoors. Vitamin D is best absorbed with food that contains fat, so it’s ideal to take Phyto D 2000 with a meal.

ImmunoSynergy: Broad-Spectrum Immune Support

For more comprehensive immune support, ImmunoSynergy offers a synergistic blend of botanicals and probiotics designed to help modulate the immune response and defend against seasonal challenges. It includes:

  • Scutellaria baicalensis (Chinese skullcap), a traditional herb used to support immune balance and a healthy stress response
  • Magnolia bark, which supports healthy immune regulation and stress resilience
  • Lactobacillus brevis, a beneficial probiotic that supports both gut and immune health on its own, but also synergizes with Skullcap to maximize its potential

Together, these ingredients help the body maintain a balanced immune response - not too reactive, but strong enough to defend effectively. ImmunoSynergy is particularly helpful during periods of high stress or increased exposure to illness.

ARA 6: Gentle Daily Immune Nourishment

Another excellent tool for winter wellness is ARA 6 powder, a source of arabinogalactan, a soluble fiber derived from the larch tree. Arabinogalactan supports immune function by acting as a gentle prebiotic and enhancing natural killer (NK) cell activity, an important part of your innate immune defense. ARA 6 dissolves easily in water or smoothies and can be taken daily as a proactive measure or during times of increased need.

Stay Consistent and Listen to Your Body

The key to immune support is consistency. Incorporating Phyto D 2000, ImmunoSynergy, and ARA 6 into your winter routine can help keep your immune system balanced and resilient. 

With thoughtful support and a bit of planning, winter doesn’t have to mean more sick days. Instead, it can be a season of deep nourishment, community connection and strong immunity.