What does low immunoglobulin indicate?

Immunoglobulins (Ig) are serum proteins secreted by the immune system that can defend against harmful foreign substances in the body and serve as key immune factors protecting human health. Low immunoglobulin (Ig) levels indicate abnormal immune function in the host, resulting in a poor immune response to viral and bacterial infections, increased susceptibility to infections, higher risk of inflammatory diseases, and greater likelihood of disease recurrence. Additionally, when immunoglobulin (Ig) levels are low, the effectiveness of certain immunotherapies may be compromised, potentially prolonging treatment duration. An Ig level below 120–150 indicates significantly impaired immune function, leading to weakened defense against viral and bacterial infections, increased infection risk, and potential for recurrent health issues. Therefore, maintaining good lifestyle habits, actively participating in physical activities, increasing exercise, following a balanced diet, undergoing regular health check-ups, using medications appropriately, and ensuring timely diagnosis and treatment are especially important to sustain optimal immune function and overall health.