Women stay mentally sharp farther into old age than men typically do, and scientists now think they know why. It all has to do with how the brain burns energy. A study in the Proceedings of the National Academy of Sciences shows that women’s brains burn energy in a much more youthful way throughout adulthood. Women’s brains appear to be about three years younger than men’s of the same chronological age, even in their 20’s, and that difference holds for the rest of their lives.
Binge drinking and prolonged heavy drinking may trigger a permanent change in a person’s DNA, which results in an even greater desire for alcohol. A study in the journal Alcoholism: Clinical and Experimental Research shows that among binge and heavy drinkers, two genes are modified that influence drinking behavior—one that influences the body clock and another regulating the stress-response system. Scientists hope the findings may eventually help identify biomarkers for people at risk for alcoholic changes.
And finally, more than half of all American workers say they’ve suffered from job burnout, but most of them won’t take a “mental health day” away from the job to deal with it. The University of Phoenix survey shows only a third of workers have taken time off for mental health, mostly because they say their companies don’t view it as an acceptable reason to be off work.
Some people are more likely than others to become persistent opioid users after surgery, and a new report from “Choices Matter” finds that millennial women are at greatest risk. Researchers say the number of women age 18 to 34 who become persistent opioid users six months after surgery rose by 17 percent last year alone. Forty percent more women than men continue using opioid painkillers long after surgery, and while 12 percent of patients overall become addicted or dependent on them after surgery, that number is 18 percent among millennials.
Over the last decade or so, a number of studies have come out suggesting that a glass of wine per day is good for your heart. But a new study finds that the risks of drinking far outweigh the benefits. In fact, researchers say consuming just one drink per day, every day increases the risk of premature death by 20 percent. The study in the journal Alcoholism: Clinical and Experimental Research explains that daily drinking increases cancer risk so much that it overshadows any heart benefit.
A person’s mix of intestinal bacteria can mean the difference between being thin or obese. Now a new study shows that the bacteria in an infant’s mouth can predict obesity. The study in the journal Scientific Reports finds that a child’s oral bacteria at age two can predict obesity two years later. Researchers hope the finding may lead to preventive steps for children who are found to be at risk.
Lung cancer deaths in California are 28 percent lower than the rest of the country, and that gap is increasing by almost a percentage point per year. What are they doing right? A new study in the journal Cancer Prevention Research gives credit to the state’s aggressive anti-smoking campaign. Researchers say the campaign has resulted in a 39 percent lower rate of people who start smoking compared to the U.S. as a whole, a 30 percent lower consumption of cigarettes among those who do smoke, and a 24 percent higher early quit rate.
And finally… if you want to avoid getting sick this flu season, science has proven a way to increase the odds—turn on your tv. A study in the journal BMC Infectious Disease shows that people who watch more tv get sick with the flu less often. The reason is pretty obvious. Those people are staying home and have a lot less chance to catch a flu virus from someone else.