(HealthDay News) -- Regular medical checkups are essential to stay healthy and prevent illness.

(HealthDay News) -- Food allergy reactions range from mild to life-threatening, depending on the person.

WEDNESDAY, May 25 (HealthDay News) -- Older adults who say they've had a life-changing religious experience are more likely to have a greater decrease in size of the hippocampus, the part of the brain critical to learning and memory, new research finds.

WEDNESDAY, May 25 (HealthDay News) -- The ability of men and women to have staying power and a strong level of commitment in their romantic relationships can be traced back to their early childhood and adolescence, a new study finds.

WEDNESDAY, May 25 (HealthDay News) -- Children who are successfully treated for cancer are at greater risk of developing mild to severe gastrointestinal problems down the road, a new study finds.

WEDNESDAY, May 25 (HealthDay News) -- The Internet has put the world at people's fingertips, but in some cases it has also allowed banned or controlled substances to slip within their grasp, British researchers warn.

WEDNESDAY, May 25 (HealthDay News) -- A procedure commonly used in breast reconstruction but lacking evidence as to its safety does, in fact, appear to be safe and unlikely to increase the chances of breast cancer returning, a new study has found.

WEDNESDAY, May 25 (HealthDay News) -- This Friday, the start of the Memorial Day weekend, is also "Don't Fry Day," a time for skin-safety experts to remind Americans about the hazards of overexposure to sunlight.

WEDNESDAY, May 25 (HealthDay News) -- About 19 percent of U.S. adults aged 24 to 32 have high blood pressure, but many of them are unaware that they have the potentially life-threatening condition, new research reveals.

WEDNESDAY, May 25 (HealthDay News) -- A new drug that had shown promise in animal testing is not better than aspirin in preventing a second stoke in someone who's already had one, a new study has found.

TUESDAY, May 24 (HealthDay News) -- Getting enough calcium for bone health is essential, but getting more than that doesn't appear to confer any additional benefit, Swedish researchers have found.

WEDNESDAY, May 25 (HealthDay News) -- Science has shown that diets that veer close to starvation can make everything from mice to monkeys live longer.

WEDNESDAY, May 25 (HealthDay News) -- Taken in combination, two commonly prescribed drugs, the antidepressant Paxil and the cholesterol-lowering medication Pravachol, appear to significantly raise blood sugar levels, a new study finds.

WEDNESDAY, May 25 (HealthDay News) -- The symptoms and severity of autism vary widely, but new research shows remarkable similarities at the molecular level in the brains of people with the disorder.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

WEDNESDAY, May 25 (HealthDay News) -- Home-based exercise managed by a physical therapist is just as effective at restoring stroke patients' walking ability as a formal rehabilitation program using a specialized treadmill, a new study indicates.

WEDNESDAY, May 25 (HealthDay News) -- The incidence of bacterial meningitis dropped by 31 percent between 1998 and 2007, new government research shows.

WEDNESDAY, May 25 (HealthDay News) -- A cheap, once-daily, four-drugs-in-one medication, dubbed a "polypill," appears to cut users' odds for heart disease and stroke by 50 percent, a new international study finds.