Longer Life, by the Numbers

The elixir of ling life is pretty simple stuff. Exercise, eat well, avoid stress, stop smoking and take preventative medications. But how exactly do these and other things we can do affect our body's vital organs? If you are embarking on a health change journey or are already on the road, here are some tips and scientific finding to support the modifications in your behavior.

Medical science is incremental in nature, so a single study is rarely the final word; the associations that come from observational studies are sometimes overturned by later trials. Read the numbers prudently and consult with your doctor before making changes.

photos by Robert F. Bukaty (walking) and David Duprey (brain) — associated press ; ART BALTROTSKY (meditation); Jennifer Domenick (ibuprofen) ; graphic by bill webster — the washington post

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