It may not be surprising, but a new study offers some proof that patients who are worried about their medications are more likely to have side effects from them. Read more »

People who get enough fiber in their diets, particularly from whole grains, may have a lower risk of developing chronic lung disease than those who eat few high-fiber foods, a new study finds. Read more »

Vitamin D is vital in activating human defences and low levels suffered by around half the world's population may mean their immune systems' killer T cells are poor at fighting infection, scientists said on Sunday. Read more »

People who are obese are at increased risk of becoming depressed, and people who are depressed are at increased risk of becoming obese, Dutch researchers have found. Read more »

Can't lose weight on a low-fat diet? Maybe you need to cut carbs instead, and a new genetic test may point the way, maker Interleukin Genetics Inc reported on Wednesday. Read more »

People looking to improve their heart health by lowering their cholesterol levels won't find help from calcium and vitamin D supplements, according to a new study. Read more »

Psychiatrists in Britain claim to have discovered a new phenomenon -- people diagnosing themselves with bipolar disorder, according to research published on Monday. Read more »

Young adults who started using cannabis at an early age and used it for several years are at increased risk of being diagnosed with a form of psychosis, of hallucinating or having delusions, a study published Monday found. Read more »

People with chronic low-back pain can benefit from cognitive behavioral therapy, a new British report shows. Read more »

If doctors used an existing simple lab test on patients with coughs or flu-like symptoms they would be better able to decide which of them might benefit from antibiotics, scientists said on Thursday. Read more »