The best time to get a flu shot is when you haven't had antibiotics recently, a new study has found, because healthy gut bacteria protect immunity.
The real question a new study suggests, isn't why some people occasionally experience hallucinations: It's why all of us aren't hallucinating all the time.
Selectively subduing a set of cells that migrate to the brain after a stroke occurs could meaningfully treat the stroke even days later.
Diagnosis of inflammatory bowel disease currently requires an invasive procedure. New research identifies a way to identify the disease using a blood draw.
The parasite that causes malaria is remarkably adept at developing resistance to the drugs devised to combat it. But new research suggests a solution.
Osteoarthritis has traditionally been thought to be an inevitable result of wear and tear. But it's now clear the immune system is playing a leading role.
Old mice suffered far fewer senior moments on memory tests when Stanford investigators disabled a single molecule dotting the mice’s cerebral blood vessels.
Helicobacter pylori, a potentially nasty bacteria, somehow lives in one of every two human stomachs -- no mean feat. Here's how the bug pulls it off.
Brain cells called microglia keep brains young by eliminating accumulations of protein debris. But their garbage-colllection ability fades with age.
Each time you get a reward, your brain's internal spatial map warps just a bit in a way that makes it easier for you to get back to wherever you got it.
P. aeruginosa, a type of bacteria, is increasingly drug-resistant, and there's no vaccine against it. But it has a recently discovered Achilles heel.
One night Jim Spudich knocked off a few chapters of a murder mystery before falling asleep, to awaken with a vision that would solve a medical mystery.
A pattern of inflammatory activity in circulating blood cells just two days after a stroke predicts the loss of substantial mental acuity a full year later.
Cracking the crystal structure of a protein complex centered around a major immune signaling protein, interferon-gamma, may speed its medical use.
Intestinal tissue can be cultured in the form of little hollow "gutballs." To make them more useful, scientists figured out how to turn them inside out.
You've already knew our modern high-fat, high-sugar, high-starch, minimal-fiber diet was going to be the death of us all, because you've been told a thousand times. Now, a new study in mice gives us yet another reason to watch our intake.