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Science and the Golden Years
The Scientist 2004, 18(8):12
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More than just annual birthday parties, wrinkles, and gray hairs, aging has two main components: primary aging, which is the natural process of senescence; and secondary aging, due to age-related diseases such as cancer, Alzheimer's, Parkinson's, osteoporosis, osteoarthritis, and macular degeneration.
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