Heart Keeps Pumping Out New Cells The heart-stopping news from Stockholm is that the heart never stops—growing, that is. Because researchers have shown that the human heart continues to produce muscle cells, even in adults. Scientists have long debated wh...

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I think your real problem is stress,' the doctor said when I complained that the muscle injections he was giving me hadn't relieved my neck and shoulder pain. 'You can't blame me for everything that's hard in your life,' he said. My bursting into tears on...

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