At least to the extent that a blog functions as your diary.
Keeping a diary is bad for your health, say UK psychologists. They found that regular diarists were more likely than non-diarists to suffer from headaches, sleeplessness, digestive problems and social awkwardness.
Their finding challenges assumptions that people find it easier to get over a traumatic event if they write about it.
“We expected diary keepers to have some benefit, or be the same, but they were the worst off,” says Elaine Duncan of the Glasgow Caledonian University. “In fact, you’re probably much better off if you don’t write anything at all,” she adds.
[…] Although she does not have proof, Duncan speculates that diarists buck the usual trend because instead of a single, cathartic outpouring to offload trauma, diarists continually churn over their misfortunes and so never get over them. “It’s probably better not to get caught in a ruminative, repetitive cycle,” she says.
Certainly dwelling on one’s problems is probably not conducive to either resolving them or getting over them. What the study doesn’t address (which is admitted in one short paragraph) is whether diary-writers are less healthy because of diary-writing about their stress — or are stressed first and write about it in their diaries (perhaps with some cathartic effect) thereafter.
In other words, one could as easily say that “people who tell their stories to therapists and psycho-analyists are more likely to be mentally or emotionally troubled than the general population.”
Silly.
(via Antipixel)
Sounds very much like a selection bias problem to me.
Or, at the very least, a lack of any causality (or even an experimental determination of which way a causal link might go).