Neurological diseases are conditions that affect your nervous system. Your nervous system includes your brain and spinal cord as well as all the nerves that branch out to the rest of your body. There ...
One 50-year-old has the nimble metabolism of a teenager, while another’s is so creaky he developed type 2 diabetes—though his immune system is that of a man 25 years his junior. Or one 70-year-old has ...
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