Researchers discover a trait in kids that can predict how long their parents live
There's a genetic overlap that spans generations.

A nervous child at a spelling bee.
It’s common knowledge that in longevity studies, people who are smarter than average as children live longer than those with average or below-average intelligence. This is pretty easy to test: compare the intelligence tests they took at a young age in school with how long they lived.
However, researchers weren’t sure whether it was because smarter people also have good genes for longevity, meaning their mental and physical functions were superior. Or, if being smarter means you make better health choices, earn more money, and live in a safer neighborhood, which could also contribute to your longevity.
The trait in children that can predict their parents' longevity
To figure out whether a smart kid’s longevity was due to lifestyle or luck of birth, researchers at the University of Edinburgh studied how long the gifted children's parents lived, since longevity has been found to be genetic. The scientists found that the parents of intellectually gifted children live longer than those with children who were of average or below-average intelligence.
So, if junior does a great job on his standardized testing in the second grade, there is a chance that you may live longer than others born around the same time as you.

Why is it that if a child has above-average intelligence, their parents will live longer? Researchers believe this is due to a genetic phenomenon known as pleiotropy, which occurs when a single genetic trait affects multiple systems within the body. This is part of the “system integrity” hypothesis, which holds that some people have genetic profiles that benefit the entire organism.
It’s also believed that having a healthier body can also lead to higher intelligence. If someone has a well-functioning nervous system, that could bode well for their body, with an enhanced ability to fight disease, and for their mind, by providing better neural connections.
How can I increase my longevity?
Having superior genes is really the luck of the draw in life, and kudos if you’ve been blessed with a system that is fine-tuned for health and intelligence. But what about the other folks who may need to pick up a few skills to live longer? According to psychologists, the number one personality trait you can develop on your own is conscientiousness.
“Conscientiousness is a fundamental personality trait—one of the Big Five—that reflects the tendency to be responsible, organized, hard-working, goal-directed, and to adhere to norms and rules,” Psychology Today says. “Like the other core personality factors, it has multiple facets; conscientiousness comprises self-control, industriousness, responsibility, and reliability."

Why do conscientious people live longer?
“Conscientious people don’t do stupid things, so they have lower rates of accidents and better health behaviors,” David Watson, a former professor of personality psychology at the University of Notre Dame, tells CNBC’s Make It. “The basic idea is if you want to increase your conscientiousness, act more conscientious, and the attitude follows the behavior. Try to be on time for things. Follow through on things.”
If you have a child and they are killing it on standardized tests, then you’re lucky because you may get to live a longer life than the folks you went to school with. But if you haven’t won the genetic lottery, you can still add a few years on to your life by becoming more conscientious. Create a predictable environment, show up on time, and set some small goals and accomplish them. Then not only are you living longer, but probably enjoying greater success as well.






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Feeling the stress: A young woman holds her head in frustration.
Friends sharing a laugh over coffee at a cozy café.
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