Immune System

Kids with immune systems that react strongly to infections could have a higher risk of depression, a new study suggests.

There are some biological markers linked with a higher chance of surviving Ebola, experts say.

Exposure to a gluten-free diet prenatally or very early in life — in the womb or through a mother's milk — may reduce the risk of type 1 diabetes, at least in mice, a new study suggests.

People might be able to influence their immune response by practicing certain breathing techniques in combination with spending time in low temperatures, a new study finds.

Bats' ability to fly may protect the organisms from becoming ill with a range of viruses known to be deadly to humans, including Ebola and rabies, according to a new hypothesis.

Amoebae can kill human cells by eating them alive, biting off chunks of intestinal cells until they die, a new study finds. This is the first time scientists have seen this method of cell killing.

One woman's uncommon ability to fight her HIV infection may provide new insights for developing a vaccine that triggers a special immune response against the viral disease, researchers said.

The people at highest risk for suffering from food poisoning are seniors, pregnant women, young children, and those with chronic diseases.

Humans may be able to smell sickness, or at least detect a distinct odor in the sweat of people with highly active immune systems that are responding to infection, a new study from Sweden suggests.

There's no cure for psoriasis yet, but there are many ways to get relief from the symptoms of this common skin disease.

Flu Vaccine May Work Better in Women

A type of cancer therapy that directs the body's own immune system to fight cancer cells has been named as the "breakthrough of the year" by one of the world's top science journals.

The higher levels of carbon dioxide in the atmosphere could spur mold to grow more allergenic proteins, exacerbating people's response to the fungus, new research finds.

A single dose of the human papillomavirus (HPV) vaccine may be enough to generate long-term protection against infection with the virus, a new study from Costa Rica suggests.