Women's Brains Are Aging Slower Compared To Men's Brains
Women's Brains Are Aging Slower Compared To Men's Brains
Women's brains are four years younger than men's on average
06 February, 2019, 23:16
NEW YORK, Feb 5 ― Women tend to outlive men and stay mentally sharp longer, and a new study out yesterday could explain why: female brains appear on average about three years younger.
Goyal said that while the differences between the brain age of men and women was "significant", it was "nowhere near as big a difference as some sex differences, such as height". It's also been demonstrated that gene expression in the brain changes more rapidly in ageing men than women, resulting in a reduced ability to build and break down molecules in the male brain.
The brain may make up just 2% of our total body mass, but it uses a quarter of our body's total glucose. When people are younger, they devote more glucose to a metabolic process called "aerobic glycolysis", which is thought to help with brain development and maturation, including brain-cell growth. Goyal, Raichle, Vlassenko and colleagues are now following a cohort of adults over time to see whether people with younger-looking brains are less likely to develop cognitive problems.
The team trained an AI algorithm to guess people's ages based on the amount of oxygen and glucose flowing through their brain. Then they reversed the method and had the pc estimate an individual's age based mostly on mind metabolism knowledge.
"This enormous 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. Study Implication Goyal clarified that the study does not imply that men's brains are aging faster.
This can cause problems later in life and scientists hope to one day slow it down with state-of-the-art drugs or brain therapy.
Also, the relative youthfulness of women's brains was detectable even among the youngest participants, who were in their 20s.
MANU GOYAL: We could perhaps predict the age of the brain using that metabolic information.
"It's not that men's brains age faster", said Goyal.
It's already well known that women live slightly longer than men. "Males, their blood flow to the brain decreases quite a bit as they go through puberty".
As the researchers say, the extent of brain decline varies considerably between individuals.
Combined, past and present findings suggest that the female brain is more youthful beginning in young adulthood and that this persists throughout her life. "We're being very cautious in not speculating on what this means in terms of downstream dementia and so forth".
Human brain aging is characterized by varying trajectories.
At any age, you can help protect your health by having a balanced diet, taking regular exercise to maintain a healthy weight, not smoking and drinking in moderation.
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