Posted this week in BrainWork:
Effects of Hormone Therapy May Hinge on Timing, Genes
by Sandra A. Swanson
Experts remain divided on the merits of hormone treatment for menopausal women. New evidence lends support to the idea that timing, genetics and the existence of different estrogen receptors in the brain contribute to the effects of estrogen on memory, mood and cognition.
ADHD Studies Target Circuitry, Stimulants' Effects
by Brenda Patoine
Past studies of psychostimulant drugs taken for attention-deficit/hyperactivity disorder have shown a slowing of cortical growth, but new imaging research reveals that the drugs may normalize development. Researchers still urge caution, however.
Controlling Blood Glucose May Fend Off Cognitive Decline
by Tom Valeo
Elevated blood glucose levels negatively affect a subregion of the hippocampus responsible for forming memories, according to new research. The finding may help explain memory impairment as we age and in people with diabetes. Other studies are looking at whether medications help absorb glucose and improve memory.
Stock Market Success May Stem from Prenatal Hormone Levels
by Scott P. Edwards
Testosterone levels before birth affect financial traders’ success, perhaps by enhancing risk taking, a recent study suggests. The clue lies in the length of traders’ ring fingers relative to their index fingers—longer ring fingers indicate greater testosterone exposure in the womb, and traders with this characteristic made more money than others, on average.
And, in News from the Frontier: Brain response to vision-loss disorder may be swift, break in circadian rhythm may lead to disease, fine-tuning mechanism may hold key to Alzheimer’s disease, and new mechanism for memory consolidation in sleep.