A rodent-borne illness is suspected of causing an outbreak aboard a cruise ship that has killed three people and sickened others.

Blood tests measuring the aging of certain white blood cells can predict cognitive and mood-related symptoms of depression, rather than physical symptoms. These findings, published in The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences, bring researchers closer to identifying a biomarker for detecting the mood disorder, which affects nearly one in five US adults.

Low doses of the investigational medicinal product endoxifen reduce breast density to the same extent as the standard treatment tamoxifen, but without causing such troublesome side effects. This is shown by a new study from Karolinska Institutet published in the Journal of the National Cancer Institute. The results may have implications for future preventive treatment of breast cancer.

With no known cure for Parkinson’s disease, research suggests that exercise is one of the most effective ways to slow its progression. “Exercise may be more than just good for your general health, as it can actually help slow the progression of Parkinson’s by reducing the brain inflammation at the root of the disease,” said Merrill Landers, interim dean for UNLV’s School of Integrated Health Sciences and a practicing physical therapist for the past 30 years.

Creatine, a compound often associated with gym-goers and athletes, has long been touted as a performance-enhancing supplement. But beyond the hype, what does science actually reveal about its effects on the body and mind?