The slow march of time is inexorable and irreversible, but that doesn't mean its effects on our bodies have to be etched in stone . One of the more intriguing ideas in aging research is that growing old isn't just a matter of damage accumulating over the years. It may also be a story of lost information – the gradual breakdown of the molecular instructions that tell cells which genes to use and which to keep quiet. If this is correct, aging may not be an entirely one-way process. If some of

Tag-uri: DNA