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Scientific American : Healthy Brain Magazine 2026 Issue 63

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Scientific American : Healthy Brain Magazine 2026 Issue 63

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Published by Scientific American

The Magazine

Scientific American : Healthy Brain Magazine Issue 63 When Does Memory Begin

It took years, an international consortium and a small army of volunteer proofreaders. That effort led to the first full map of every neuron and synapse in an animal brain—139,000 neurons, 50 million connections, none of them left unaccounted for. The animal brain being mapped? A fruit fly’s. In comparison, the human brain has upward of 86 billion neurons, connected by some 100 trillion synapses. It is easily one of the most complex objects we know—including the universe itself. In this special edition, Scientific American surveys that complexity—the everyday mechanics of a working brain, what keeps it healthy or lets it fail, and the odder mysteries scientists have yet to solve.

In This Magazine

The complexity of the mind guarantees that generations of scientists to come will be well occupied trying to understand it. But the tactics to help yours thrive are refreshingly unmysterious: whole foods, sleep, movement, friends. You don’t need to solve the brain to take good care of it.

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