FRIDAY, Aug. 1 (HealthDay News) -- There's evidence that the adult human brain has the ability to grow new neurons, say researchers at the Cleveland Clinic Lerner Research Institute.

The study included nine people with multiple sclerosis (MS) and a control group of four healthy people. In MS, the immune system destroys the myelin sheaths that surround and protect nerves. When the myelin is destroyed, the nerves misfire, and nerve impulses can be slowed or disrupted.

THURSDAY, June 5 (HealthDay News) -- Levels of a brain chemical known as serotonin govern the way people react to unfair offers when they play the game of life, a new study indicates.

Serotonin, which carries messages between neurons, is involved in emotional control. One recent study found that the expression of anger in women was affected by variations in a gene governing the receptors for serotonin in brain cells.

WEDNESDAY, April 23 (HealthDay News) -- Chronic inflammation triggers cell fusions that may protect neurons, according to a Stanford University School of Medicine study.