Coronado, Calif.

A startling suggestion is buried in the fine print describing proposed changes for the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders  perhaps better known as the D.S.M. 5, the book that will set the new boundary between mental disorder and normality. If this suggestion is adopted, many people who experience completely normal grief could be mislabeled as having a psychiatric problem.

Suppose your spouse or child died two weeks ago and now you feel sad, take less interest and pleasure in things, have little appetite or energy, can’t sleep well and don’t feel like going to work. In the proposal for the D.S.M. 5, your condition would be diagnosed as a major depressive disorder.

This would be a wholesale medicalization of normal emotion, and it would result in the overdiagnosis and overtreatment of people who would do just fine if left alone to grieve with family and friends, as people always have. It is also a safe bet that the drug companies would quickly and greedily pounce on the opportunity to mount a marketing blitz targeted to the bereaved and a campaign to “teach” physicians how to treat mourning with a magic pill.

It is not that psychiatrists are in bed with the drug companies, as is often alleged. The proposed change actually grows out of the best of intentions. Researchers point out that, during bereavement, some people develop an enduring case of major depression, and clinicians hope that by identifying such cases early they could reduce the burdens of illness with treatment.