GlycanAge determines your biological age by looking at the state of your immune system and inflammation. We analyze the glycans attached to the most common antibody in your blood, called Immunoglobulin G or IgG. The type of glycans attached to IgG can change the function of IgG from pro-inflammatory to anti-inflammatory and vice versa. We need both functions for a strong immune system, but the balance between them will determine our general health status and consequentially our biological age.