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, ...

Having excess body weight can increase your blood pressure and affect your immune system. Learn what happens to blood ...

Sat, January 24, 2026 at 2:56 PM UTC The immune system is the body’s natural defense network that helps to keep you healthy from things like bacteria, viruses, and parasites. It’s a complex network of ...

What keeps some immune systems youthful and effective in warding off age-related diseases? In a new paper published in Cellular & Molecular Immunology, USC Stem Cell scientist Rong Lu and her ...

How people with compromised immune systems respond to vaccines is an important area of immunological research. A study led by ...

During fasting or exercise, immune cells (red) migrate to the pancreas and stimulate glucagon-producing cells (orange) to regulate blood sugar, with cell nuclei shown in blue. “For decades, immunology ...

Researchers have developed a new method to recreate a robust and functional human immune system in mice using mononuclear cells from the cord blood. This new kind of mice, that count with most of the ...

The NIH Office of Dietary Supplements published a fact sheet in March 2025 reviewing the evidence behind vitamins C, D, and A ...

A new study describes a technique that rejuvenates aging blood-forming stem cells and could help reduce the risk of age-related blood disorders.

The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body. Water ...

An “immune system reset” eliminated autoimmune, or Type 1, diabetes in mice in a study conducted at. Researchers say the strategy could also have potential for treating other autoimmune diseases and ...