Scottsdale, Arizona - Older adults need to be especially vigilant about drug safety, according to the December issue of Mayo Clinic Health Letter. That’s because older adults are more likely to be taking more than one medication at a time. Interactions between drugs can cause side effects that might not occur if a drug were taken alone. And, physical changes in older adults can alter both the effectiveness of a medication and side effects, compared with what a younger adult might experience.

Scottsdale, Arizona - During a traditional eye exam, an eye doctor dilates your eyes with special eyedrops and then checks your retinas for abnormalities using tools such as an ophthalmoscope - a lighted magnifying instrument. During a laser retina scan, such as Optomap, your eyes may or may not be dilated. A laser scans your eyes and then produces digital images of your retinas.

Atlanta, Georgia - For most of us, December 27, is just another day on the calendar, but not for Chris Draft. Having played linebacker in the NFL for more than 10 years, Draft was used to facing tough opponents, but nothing could have prepared him for the news he and then girlfriend, Keasha, received on December 27, 2010. On that day, Keasha, a vibrant young woman who had never smoked, was diagnosed with Stage IV Lung Cancer.

Los Angeles, California - One of the great recent discoveries in modern biology was that the human body contains 10 times more bacterial cells than human cells. But much of that bacteria is still a puzzle to scientists.

Sacramento, California - California Department of Public Health (CDPH) Director Dr. Ron Chapman warned consumers not to eat all varieties of Happy Apple Brand Caramel Apples because they may be contaminated with Listeria monocytogenes.

London, England - The first results to emerge from a nationwide project to study the genetic causes of rare developmental disorders have revealed 12 causative genes that have never been identified before. The Deciphering Developmental Disorders (DDD) project, the world’s largest, nationwide genome-wide diagnostic sequencing programme, sequenced DNA and compared the clinical characteristics of over a thousand children to find the genes responsible for conditions that include intellectual disabilities and congenital heart defects, among others.