In another study of blue light, researchers at the University of Toronto compared the melatonin levels of people exposed to bright indoor light who were wearing blue-light–blocking goggles to people exposed to regular dim light without wearing goggles. The fact that the levels of the hormone were about the same in the two groups strengthens the hypothesis that blue light is a potent suppressor of melatonin. It also suggests that shift workers and night owls could perhaps protect themselves if they wore eyewear that blocks blue light. Inexpensive sunglasses with orange-tinted lenses block blue light, but they also block other colors, so they're not suitable for use indoors at night. Glasses that block out only blue light can cost up to $80.
Emily Taylor, despite being reunited with her husband from prison, becomes severely depressed with emotional episodes and suicide attempts. Her psychiatrist, Jonathan Banks, after conferring with her previous doctor, eventually prescribes an experimental new medication called Ablixa. The plot thickens when the side effects of the drug lead to Emily killing her husband in a "sleepwalking" state. With Emily plea-bargained into mental hospital confinement and Dr. Banks' practice crumbling around him, the case seems closed. However, Dr. Banks cannot accept full responsibility and investigates to clear his name. What follows is a dark quest that threatens to tear what's left of his life apart even as he discovers the diabolical truth of this tragedy. Written by Kenneth Chisholm (kchishol@)
Examples: Darifenacin (Enablex), oxybutynin (Ditropan XL, Gelnique, Oxytrol), solifenacin (Vesicare), tolterodine (Detrol) and trospium (Sanctura). Another oxybutynin product, Oxytrol for Women, is sold over the counter.
How they can cause memory loss: These drugs block the action of acetylcholine, a chemical messenger that mediates all sorts of functions in the body. In the bladder, anticholinergics prevent involuntary contractions of the muscles that control urine flow. In the brain, they inhibit activity in the memory and learning centers. The risk of memory loss is heightened when the drugs are taken for more than a short time or used with other anticholinergic drugs.