According to the National Center for Health and Statistics, under the Centers for Disease Control and Prevention (CDC), ...

Alveolar macrophages are immune cells that live in the tiny air sacs of the lungs. Under normal conditions, these cells act as guardians, keeping the lungs healthy, supporting breathing, and ...

Your immune system is supposed to fight diseases and help your body recover. But in some cases, it may be weak, less active than necessary, overactive, or it may even attack ...

One of COVID-19's scariest mysteries is why some people are mildly ill or have no symptoms and others rapidly die — and scientists are starting to unravel why. An international team of researchers ...

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, ...

How can trillions of microbes live in our gut without causing a massive immune reaction? Scientists have been researching this question for years, and we are learning more about how the gut microbiome ...

Kimchi may do far more than add flavor to meals—it could help fine-tune the human immune system. A clinical study using advanced single-cell genetic analysis found that regular kimchi consumption ...