[Study of mortality under 30 years of age in families of psychotic patients].
After O. Bourguignon's studies (1984), the authors made the following assumption: there is an higher mortality rate before 30 years in families including at least one psychotic. This assumption is confirmed, as far as brothers, sisters and children are concerned, for 101 psychotics compared to 101 control-subjects. This higher death-rate in young subjects is associated in these psychotics' families with greater psychiatric morbidity, with higher rates of celibacy and break-ups of couples. It is the opinion of the authors that these phenomena should be interpreted as portent of a possible extinction of the lineage.