1. Health & Medicine

    Study challenges surgery for lung disease

    Patients with the most severe emphysema shouldn't undergo major surgery that removes part of their damaged lungs.

  2. Health & Medicine

    Walking and eating for better health

    A low-fat diet and regular exercise can ward off diabetes in people at high risk of developing the disease.

  3. Health & Medicine

    Gene implicated in deadly influenza

    A strain of influenza virus that struck in Hong Kong in 1997 got some of its lethality from a mutation in the gene encoding an enzyme called PB2.

  4. Health & Medicine

    Arteries may be vulnerable to HIV attack

    HIV may directly interact with cells in arteries, predisposing people to heart attacks.

  5. Health & Medicine

    Immunity’s Eyes

    Proteins called toll-like receptors allow human immune cells to detect microbes.

  6. Health & Medicine

    Milk seems to guard against breast cancer

    Norwegian scientists have linked high milk consumption to low incidence of breast cancer.

  7. Health & Medicine

    Hindering glutamate slows rat brain cancer

    Compounds that inhibit the amino acid glutamate impede a form of brain cancer called glioma in rats.

  8. Health & Medicine

    Insulin lowers more than blood sugar

    Insulin may reduce inflammation and protect the heart.

  9. Health & Medicine

    Healing the heart from within

    An unusual mouse strain can regenerate heart tissue when the organ is damaged.

  10. Health & Medicine

    Stem cell research marches on

    Cells from human embryos can be transformed into heart cells or insulin-secreting cells.

  11. Health & Medicine

    Drugs Counter Mad Cow Agent in Cells

    Fueled only by promising studies of cells, a California research team has invited controversy by beginning to give a little-used malaria drug to patients who have the human version of mad cow disease.

  12. Health & Medicine

    Vaccine Verity

    Widely publicized concerns about vaccination leading to autism, multiple sclerosis, and diabetes have not been borne out by research.