Men's brains are almost four years "older" than those of females the same age, explaining why women stay sharper for longer in old age, according to new research.
"This huge amount of data" allowed the researchers "to convincingly show that, no matter how you look at it, males have more accelerated metabolic brain age (e.g., greater than their actual calendar age)", said Lockhart, who was not involved in the new study but who has researched the roles of vascular and metabolic disorders in the onset and progression of Alzheimer's disease. The researchers put data from the scans that showed how the brain uses oxygen and glucose into a computer model that was created to estimate the metabolic age of individuals' brains. In the study of more than 200 adults who underwent brain scans, the researchers looked at brain metabolism-how efficiently the brains were able to turn sugar into fuel that powers the brain.
The findings, led by researchers from the Washington University School of Medicine in St. Louis, showed that women's brains appear to be about three years younger than men of the same chronological age, metabolically speaking.
Then, the researchers flipped their analysis: they trained the algorithm on women's data, and told it to calculate the brain ages for men. They found that on average, women's brains are 3.8 years younger than men's. "Rather, it seems that women's brains start off at a younger age when they reach adulthood, and they keep that throughout the remainder of their adulthood, basically buying them a few extra years". Similarly, the algorithm judged men's brains to be an average 2.4 years older than their actual age.
For each person, the researchers determined the fraction of sugar committed to aerobic glycolysis - that sustains brain development and maturation - in various regions of the brain.
That is based on their use of glucose, and how it is burned for energy, which can affect brain performance.
More work is underway to confirm and better understand the implications of the research.
It was already known that men's brains shrink faster with age than women's, but the new results suggest their brain metabolism is different too. "Males, their blood flow to the brain decreases quite a bit as they go through puberty". "This might mean women are a little bit more resilient to certain aspects of brain aging in general, but it could also introduce certain vulnerabilities".
Goyal said that the researchers are now working on another study to test whether the findings play a role in why women don't experience as much cognitive decline as men. So they had a computer study how metabolism changed in both men and women.
Goyal and his colleagues believe that the greater youthfulness in the female brain might give a degree of resilience to aging-related changes.
As the researchers say, the extent of brain decline varies considerably between individuals. We find that throughout the adult life span the female brain has a persistently lower metabolic brain age-relative to their chronological age-compared with the male brain. But Roberta Diaz Brinton, who studies brain aging at the University of Arizona, has a more optimistic take on the results.
'What we don't know is what it means. Female's brains appeared about four years youthful, commonly.
Human brain aging is characterized by varying trajectories.
The increase is due to population growth - and not something President Trump can credit to any of his policies. Bush and Obama administrations to build fencing and other barriers that earned bipartisan support.
Oscar-winning actress Jennifer Lawrence is engaged to boyfriend Cooke Maroney , her representative has told U.S. media. Rumours of their engagement kicked off after Lawrence, 28, was recently spotted wearing a massive ring.
For those anxious that Google will be getting a copy of all of your usernames and passwords, Google's got some good news for you. If you're one of the many people using Chrome as your main browser, it certainly seems like it's worth installing.
Grande reportedly wanted to perform her latest single, " 7 Rings ", but an insider told Variety they initially balked at that. Variety says they instead, 'offered her a spot during the show's Tom Petty tribute'.
Besides Pant, the others who have joined the team are spin all-rounder Krunal Pandya and Punjab pacer Siddharth Kaul. After the remarkable victory in ODI series, India will look to bag the maiden T20 series as well.
They are also "surprised" the French club have asked for a cut of the transfer fee amid a private-funded search. It is thought Nantes will begin legal action if they do not receive a payment within 10 days.
Patriots defensive back Devin McCourty told the Associated Press on Monday that he wouldn't join the Pats on the trip. Following the game, he said he won't be joining his teammates when they visit the president during the offseason.
John Wall ruptures Achilles after heel surgery
Wall's four-year "supermax" contract extension will kick in next season with an annual salary starting at $37.8 million. Wall, 28, had left heel surgery days into the new year after consulting with a foot specialist.
Zuckerberg hits out at Facebook's critics
At that time, "multiple sources noted that messages they received from the CEO had mysteriously disappeared", The Verge reports. Participants in a group conversation receive a message saying "This message was deleted" to alert them of the change.
First Round of 2019 Oscar Presenters Announced
Audiences have dropped in recent years with the 2018 show attracting just 26.5 million viewers, the smallest number ever. Speaking of the next presenters' list, the Academy will announce the same in the coming weeks.
Grizzlies and Jazz Exploring Mike Conley-Ricky Rubio Swap
In addition, the Jazz would likely have to absorb the remaining two years and $66 million that Conley has on his current contract. Gasol can become a free agent this summer by opting out of the final year on his $25.5 million contract for 2019-2020.
The Leading Goalscorers In El Clasico History
Ousmane Dembele , who also trained after recovering from two weeks out with an ankle sprain, has not been named in the squad. Messi has scored in nine straight games in all competitions, and is the league leading scorer with 21 in 22 matches.