MONDAY, Jan. 31 (HealthDay News) -- For decades, research into treatments for multiple sclerosis has plodded forward, making slow but significant gains in improving the lives of people with the degenerative nerve disorder.

(HealthDay News) -- Barrett's esophagus may occur as a complication of gastroesphageal reflux disease (indigestion). When stomach acid backs up into the esophagus, it can cause changes in the esophageal lining, triggering Barrett's esophagus. In some cases, it can lead to cancer.

(HealthDay News) -- What middle-aged woman hasn't begged the question: Is it warm in here or is it me?

MONDAY, Jan. 31 (HealthDay News) -- Having sex while you're pregnant is generally safe, a new review finds.

MONDAY, Jan. 31 (HealthDay News) -- Super Bowl fans, beware: Research warns that Sunday's match-up between the Pittsburgh Steelers and the Green Bay Packers could be a killer, literally.

MONDAY, Jan. 31 (HealthDay News) -- Hands-on training helps improve the safety awareness and behavior of workers in highly hazardous jobs, according to a new study.

MONDAY, Jan. 31 (HealthDay News) -- Pain, embarrassment and being too busy are among the main reasons why women avoid having mammograms, a new study finds.

MONDAY, Jan. 31 (HealthDay News) -- Brain scans can predict a smoker's chances of being able to quit, according to a new study.

MONDAY, Jan. 31 (HealthDay News) -- X-rays, CT scans and MRIs may be routinely ordered for people with low back pain, but often these tests are unnecessary, suggests new guidance from the American College of Physicians.

MONDAY, Jan. 31 (HealthDay News) -- Daytime sleepiness, a common complaint of people with obstructive sleep apnea, improves greatly after surgery for the disorder, according to a new study.

SATURDAY, Jan. 29 (HealthDay News) -- An advisory panel to the U.S. Food and Drug Administration decided on Friday that electroconvulsive (also known as "electroshock") devices should be subject to the same tough testing as other medical devices entering the market.

MONDAY, Jan. 31 (HealthDay News) -- A man is much more likely to continue dating a girlfriend who cheated on him with another woman than a girlfriend who had sex with another man, a new study finds.

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

MONDAY, Jan. 31 (HealthDay News) -- Although blacks face a higher risk of having a stroke, they appear to have better odds of surviving one than whites do, a new study finds.

MONDAY, Jan. 31 (HealthDay News) -- Women who begin hormone therapy at menopause, or before, face a greater risk for breast cancer than those who start the treatment later, a new study has found.

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

MONDAY, Jan. 31 (HealthDay News) -- A federal judge in Florida ruled Monday that the controversial health-care reform law passed by Congress last spring is unconstitutional because it requires people to purchase health insurance or pay a penalty.

MONDAY, Jan. 31 (HealthDay News) -- Long-awaited U.S. dietary guidelines released Monday -- the first since 2005 -- focus on getting Americans to slash their salt intake.

MONDAY, Jan. 31 (HealthDay News) -- Two new studies report some success in treating a particularly stubborn form of cancer: melanoma, a deadly malignancy that first appears in the skin before frequently spreading to other parts of the body.

MONDAY, Jan. 31 (HealthDay News) -- With powers of smell far superior to those of humans, dogs can sniff out buried earthquake victims. They can unearth hidden bombs or drugs. They can also apparently detect colorectal cancer, Japanese researchers suggest.

MONDAY, Jan. 31 (HealthDay News) -- Older adults who took a brisk walk three times a week did better on memory tests and increased the size of their hippocampus, a portion of the brain involved with memory formation, researchers report.