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, ...

A new study explains how pancreatic tumors use a sugar coating to hide from the immune system and shows that a newly ...

As the immune system weakens with age, scientists have found a way to restore some of its lost strength. By delivering mRNA ...

An experimental treatment rejuvenates the immune system of older mice, improving the animals’ ability to fight infections. If it works in humans, the therapy could reverse age-related declines in ...