Guide
Why Do I Get the Same Illness Every Season
Recurring seasonal illness that hits you at the same time every year is a pattern with a cause. It might be vitamin D depletion in autumn and winter reducing immune function. It might be increased indoor time and vira...
Why it matters
Recurring seasonal illness that hits you at the same time every year is a pattern with a cause. It might be vitamin D depletion in autumn and winter reducing immune function. It might be increased indoor time and viral exposure. It might be the stress and disrupted routine of a specific season — back to school, tax season, the holidays — temporarily suppressing your immune system. It might be a seasonal allergy that presents as illness. Normal helps you identify the specific factors that are consistently lowering your immunity during the seasons you get ill.
When Normal helps
Normal tracks your illness episodes alongside your seasonal lifestyle patterns — vitamin D supplementation, sleep, stress, movement, diet — over time. It finds what's consistently different in the periods before your seasonal illness compared to the times you stay well.
How Normal finds it
Tell Normal about your health, energy, and illness episodes. Over a full year or two it finds the seasonal pattern and the specific lifestyle factors that most consistently precede your illness periods.
Editorial note
How to read this guide
Normal guides focus on pattern tracking: comparing symptoms, meals, sleep, stress, movement, routines, and timing over repeated days so people can notice what reliably changes how they feel.
Normal is not a medical provider. This guide is for general informational purposes and should not be used as medical advice, diagnosis, or treatment.
Related
Start with your body
Normal finds the pattern behind how you feel.
Tell Normal what happened in plain language. It connects your food, sleep, movement, stress, and symptoms over time.