Every winter, people assume they’re getting sick because of “cold and flu season.” But what if the real culprit isn’t the weather—it’s sugar? Holiday treats, processed foods, and blood sugar swings can weaken your immune system and leave you vulnerable. In this guide, we break down how sugar impacts immunity, how to protect yourself, and how Quantum Nutrition Testing (QNT) and Nutrition Response Testing (NRT) help identify your root cause. Why Everyone Gets Sick This Time of