Compared to previous stages, the brain structure at this stage is stable and remains so for about three decades. A research team in the UK has found that the brain completely changes its neural connections 5 times over a human's lifetime, leading to predictable changes during different life stages. According to a study reported by the German press agency 'dpa' from the scientific journal 'Nature Communications', turning points in the brain's neural network occur on average at ages 9, 32, 66, and 83, coinciding with differences in how we think as we age. The research team evaluated databases of about 3,800 people up to 90 years old with no neurological diseases and used magnetic resonance imaging to map the neural connections in the brain. Each of the four age groups is marked by the beginning of a new era of development accompanied by age-related changes in brain structure. According to the study, the longest of these stages is adolescence, lasting for more than three decades. 1. The first stage begins from birth until the age of 9, where the first turning point occurs at age 9 and is accompanied by a sudden change in cognitive functions and an increased risk of mental disorders. 2. In the age group from 9 to 32 years, the human brain enters the second stage, and its potential actually explodes, as the network of neural connections inside the brain is increasingly polished, according to the research team. This stage is characterized by fast connectivity within the brain with improved cognitive performance. 3. The research team says the human brain reaches its peak performance in the early thirties on average, and this stage represents the most significant turning point in our lives. The researchers say this stage is characterized by stability in the rise of intelligence and personality traits. 4. The beginning of early old age occurs at around age 66, when the least obvious turning point in the brain occurs and is not accompanied by radical changes, as the gradual restructuring process of brain networks reaches its peak. Mosley mentioned that 'at around age 32, we notice the biggest change in neural connections and the most important change in the development process compared to other turning points'. Mosley says: 'At this age, a person is more susceptible to health problems that affect the brain, such as high blood pressure'. 5. The last turning point occurs at around age 83 when the human brain reaches the late stage of old age. The exact timing of this stage varies from person to person and depends partly on cultural, historical, and social factors. Neural networks begin to decline.
