"This doesn't mean that someone who is in the later part of this adolescent brain phase is going to act like a teenager, Dr. Alexa Mousley, the study leader, told The Guardian. Instead, it means their brains simply resemble each other as they continue to grow and form until the adult brain phase is reached. This adolescent brain phase is the only time when brain efficiency is consistently increasing, study authors said."
"Age 32 also marks the "strongest shift" of all of the brain changes. Around this time, the brain goes into its adult era ― the longest phase ― which lasts until roughly age 66. During the adult era, or adult "epoch" as researchers call these phases, there is a "plateau in intelligence and personality," the study press release states. Meaning, brain function stays pretty much the same for these decades."
""This is an age when people face increased risk for a variety of health conditions that can affect the brain, such as hypertension," Mousley said in the statement. Hypertension (also known as high blood pressure) can put you at higher risk of stroke and cognitive decline. The final epoch starts at 83 and is known as "late aging," which is a time when brain connectivity reduces, and there is more reliance on specific regions."
The human brain has five distinct phases across the lifespan separated by turning-point ages around 9, 32, 66, and 83. Childhood, a time of rapid growth, lasts until about age 9 and then transitions into an extended adolescent phase that continues until roughly 32, during which brain efficiency consistently increases. Age 32 marks the strongest overall shift into the adult epoch, the longest phase, lasting until about 66 and characterized by a plateau in intelligence and personality. Increased risk factors such as hypertension during adulthood can elevate risk of stroke and cognitive decline. Late aging begins around 83 with reduced connectivity and greater reliance on specific regions.
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