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The human brain is the central organ of the nervous system, weighing about 1.3–1.4 kg and consisting of approximately 86 billion neurons that control various bodily functions. It is divided into major regions including the cerebrum, cerebellum, brainstem, and limbic system, each responsible for specific functions such as reasoning, balance, involuntary actions, and emotions. Maintaining brain health involves proper nutrition, exercise, mental activity, sleep, and avoiding harmful substances, while common di

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mhc3605

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EN