Our immune system is armed with an array of defenses designed to detect and eliminate harmful threats. One of its most powerful defense mechanisms is the complement system-a group of proteins that ...

Long Covid patients suffer from chronic symptoms such as fatigue or shortness of breath. As researchers have discovered, this is to some extent due to a part of our immune system called the complement ...

If the COVID-19 pandemic has done one thing, it’s made us all more familiar with some of the important players in the immune system. Antibodies, B cells, and T cells are among the best known parts of ...

Most people infected with the SARS-CoV-2 virus recover after the acute illness. However, a significant proportion of infected individuals develop long-lasting symptoms with a wide range of ...

Medically reviewed by Matthew Wosnitzer, MD Key Takeaways Proteinuria affects most people with complement 3 glomerulopathy ...

During the recent Covid-19 pandemic, the rate of serious illness and death was jarringly high in older populations. Why? Weakening immune systems — as we age, we become more vulnerable to infections, ...

Medically reviewed by Erika Prouty, PharmD Key Takeaways There are two types of complement 3 glomerulopathy: dense deposit ...

Calorie restriction lowers C3, an immune protein tied to aging and inflammation, improving health without requiring weight ...