Immune and infectious diseases Archive

Our understanding of how chronic inflammation can impair health has expanded dramatically in recent years, causing some people to wonder if there is a test to identify it, and if they should have it. There are several tests that can detect inflammation, and they are useful in certain situations, but not universally.

Inflammation is the body’s response to an injury, allergy, or infection, a reaction that attempts to restore the health of the affected area. But that’s only part of the story, because there are two types of inflammation, and it’s important to know the difference—and what is and isn’t true about all types.

Avoiding germs that cause respiratory and gastrointestinal illnesses is especially important during the winter months, when cases are on the rise. Learn which strategies keep you safe.

Inflammation serves a vital role in the body’s defense and repair systems, but chronic inflammation can be harmful. Learn six of the most effective ways to ward off unhealthy inflammation.

Long COVID is the continuation or development of new symptoms three months after the initial infection from SARS-CoV-2 (the virus that causes COVID) without any other explanation. An estimated 6% to 11% of adults who have had COVID have long COVID. Researchers continue to learn about how it affects people and its possible long-term risks. The best protection against long COVID is avoiding COVID infection by getting vaccinated and wearing a mask in crowded areas.

While medical knowledge on celiac disease has evolved over the past few decades, there are still aspects that remain poorly understood. Perhaps not surprisingly, misconceptions are widespread among the general public.

Sometimes mucus secretions in the lungs can persist after someone starts to get better from a chest cold, flu, pneumonia, or COVID. To cope with the problem, experts recommend two approaches. One is doing exercises that clear the lungs, such as a series of breaths and coughs that dislodges mucus. The other approach is doing exercises that strengthen respiratory muscles. An example is diaphragmatic breathing, a type of deep breathing that relies on the diaphragm muscle located below the lungs.

A 2024 study involving more than 149,000 people, middle-aged and older, found that those who had shingles were 20% more likely to notice signs of cognitive decline years later, compared with those who didn't have shingles.

Tonsil stones are small white or yellow deposits on the tonsils. They develop when bacteria, saliva, food particles, and debris from cells lining the mouth get trapped in tiny indentations on the tonsils. While usually harmless, they can cause bad breath and sore throats.