While more and more individuals talk about the experience of having their genome sequenced, science writer and geneticist Ricki Lewis says she is not ready to receive hers yet.

"A genome sequence is a mega incidentalome, an avalanche of information I don't want," Lewis says in a post on PLOS's DNA Science Blog.

There are also diseases she would not want to learn about, such as brain disorders. "If I can't prevent or delay them, why spend years worrying?"