The Food and Drug Administration is requiring manufacturers of sleeping pills to make a change to their drugs.
Makers of Ambien and similar sleeping pills are being required to lower the dosage of their drugs.
The reason: studies have suggested the drugs stay in people's systems longer than they think -- so they could be drowsy in their cars or doing other things the next morning -- increasing the risk of injury.
Regulators are ordering drug manufacturers to cut the dose in half for women because they process the drugs in sleeping pills more slowly.
The FDA is recommending manufacturers use the lower doses for men, too, but it won't be mandatory.
Scientists have discovered that NFL linebacker Junior Seau was suffering from a debilitating brain disease when he took his own life in May.
Seau shot himself in the chest.
His family donated his brain to neuroscientists at the National Institutes of Health. They discovered Seau had a disease called chronic traumatic encephalopathy, or CTE, which is typically caused by multiple hits to the head.
Experts say CTE can cause impulsiveness, forgetfulness, depression, and suicidal feelings.
