Humans

Health & Medicine

Critical Care: Sugar Limit Saves Lives

Strictly controlling blood-sugar concentrations in critically ill patients can reduce deaths by a third.

Health & Medicine

Forget about jet lag, and much more

Airline flight attendants with chronic jet lag have higher stress hormone concentrations and smaller temporal lobes (centers of short-term memory in the brain)than do more rested attendants.

Health & Medicine

Prostate protection? This is fishy

Diets rich in fish may cut a man's risk of prostate cancer.

Health & Medicine

Tofu May Get the Lead Out

Lead, a toxic heavy metal, can show up in the most unexpected places. For instance, several recent studies documented a worrisome tainting of calcium supplements. Just last month, some Mexican lollipops were recalled from U.S. stores upon a finding that their wrappers had leached lead into the candy. And recently, this column recounted the perils […]

Health & Medicine

Studies suggest how salad may protect heart

Lutein, a yellow pigment in many fruits and vegetables, may inhibit processes that jump-start the development of atherosclerosis.

Health & Medicine

Leukemia overpowers drug in two ways

Researchers discover why the anticancer drug Gleevec, also called STI-571, helps many patients who have chronic myelogenous leukemia but not those who have entered the crisis stage of the disease.

Health & Medicine

Coming to Terms with Death

Some newly recognized forms of cell death might be harnessed to aid people with cancer and other serious diseases.

Anthropology

Human fossils tell a fish tale

Fossil clues indicate that Stone Age humans ate a considerable amount of seafood, giving them a broader and more resilient diet than that of Neandertals.

Anthropology

Early agriculture flowered in Mexico

Mexico may have served as a center of early plant domestication in the Americas, according to researchers who have excavated a site near Mexico's Gulf Coast.

Health & Medicine

Soy estrogens: Too much of a good thing?

Two studies of female mice suggest that genistein, an estrogen analog found in soy, could contribute to cancer risk.

Health & Medicine

Immune attack on self halts nerve damage

T cells primed for autoimmune behavior may actually preserve nerves after a damaging blow.

Health & Medicine

Enzyme defends germ against stomach acid

The newly solved structure of a Helicobacter pylori acid-fighting enzyme has scientists divided about how the enzyme works.